By state
Historic places in Illinois
1,854 Illinois listings on the National Register of Historic Places, each mapped and dated.
2013
42nd Precinct Police Station — Chicago, Cook County, Illinois
→19967th District Police Station — Chicago, Cook County, Illinois
→1976Abbott, Robert S., House ★ NHL — Chicago, Cook County, Illinois
→2022Abraham Lincoln School — Aurora, Kane County, Illinois
→2000Adams Building — Danville, Vermilion County, Illinois
→1981Adams Memorial Library — Wheaton, Du Page County, Illinois
→1982Adams, Mary W., House — Highland Park, Lake County, Illinois
→1979Addams, John H., Homestead — Cedarville, Stephenson County, Illinois
→2003Adlai Stevenson House ★ NHL — Mettawa, Lake County, Illinois
→1987Adler Planetarium ★ NHL — Chicago, Cook County, Illinois
→1999Adler, David, Estate — Libertyville, Lake County, Illinois
→2002Adler, Mrs. Isaac D., House — Libertyville, Lake County, Illinois
→2003AF and AM Lodge 687, Orangeville — Orangeville, Stephenson County, Illinois
→2011Ahrens, Henry, House — Champaign, Champaign County, Illinois
→1981Airtight Bridge — Charleston, Coles County, Illinois
→1992Akin, Mrs. Henry F., House — Maywood, Cook County, Illinois
→1987Alexis Opera House — Alexis, Warren County, Illinois
→2004Allen Chapel African Methodist Episcopal Church — Lincoln, Logan County, Illinois
→1996Allen School — LaMoille, Bureau County, Illinois
→1982Allen, Willis, House — Marion, Williamson County, Illinois
→1988Allentown Union Hall — Allentown, Tazewell County, Illinois
→2007Allerton, Robert, Estate — Monticello, Piatt County, Illinois
→1990Alpha Delta Phi Fraternity House — Champaign, Champaign County, Illinois
→2000Alpha Delta Pi Sorority House — Urbana, Champaign County, Illinois
→2009Alpha Gamma Delta Fraternity House — Urbana, Champaign County, Illinois
→2005Alpha Phi Fraternity House--Beta Alpha Chapter — Champaign, Champaign County, Illinois
→1997Alpha Rho Chi Fraternity House — Champaign, Champaign County, Illinois
→1989Alpha Xi Delta Sorority Chapter House — Urbana, Champaign County, Illinois
→1972Alta Vista Terrace Historic District — Chicago, Cook County, Illinois
→2006Alternate Route 66, Wilmington to Joilet — Joliet, Will County, Illinois
→1970Altgeld Hall, University of Illinois — Urbana, Champaign County, Illinois
→1980Alton Chapter House — Alton, Madison County, Illinois
→2019Alton Gas & Electric Power House — Alton, Madison County, Illinois
→2011Alton National Cemetery — Alton, Madison County, Illinois
→2001Ambler's Texaco Gas Station — Dwight, Livingston County, Illinois
→1992Amboy Illinois Central Depot — Amboy, Lee County, Illinois
→2016America Fore Building — Chicago, Cook County, Illinois
→2000American State Bank — Berwyn, Cook County, Illinois
→2005Anderson--Carlson Building — Chicago, Cook County, Illinois
→1992Anderson, John C., House — Carlinville, Macoupin County, Illinois
→2010Andersonville Commercial Historic District — Chicago, Cook County, Illinois
→1980Andover Chapter House — Andover, Henry County, Illinois
→1984Andridge Apartments — Evanston, Cook County, Illinois
→1980Annawan Chapter House — Annawan, Henry County, Illinois
→2017Aplington, Zenas, House — Polo, Ogle County, Illinois
→1973Appellate Court, 5th District — Mount Vernon, Jefferson County, Illinois
→1997Apple River Fort Site — Elizabeth, Jo Daviess County, Illinois
→2002Aquitania, The — Chicago, Cook County, Illinois
→1994Arcada Theater Building — St. Charles, Kane County, Illinois
→2016Arcade Building — Riverside, Cook County, Illinois
→1976Archer House Hotel — Marshall, Clark County, Illinois
→2002Arcola Carnegie Public Library — Arcola, Douglas County, Illinois
→1980Ardmore Avenue Train Station — Villa Park, Du Page County, Illinois
→2006Ariston Cafe — Litchfield, Montgomery County, Illinois
→2003Armour Square — Chicago, Cook County, Illinois
→1982Armour, J. Ogden, House — Lake Forest, Lake County, Illinois
→1984Armour, Lester, House — Lake Bluff, Lake County, Illinois
→1996Armour, Philip D., III, House — Lake Bluff, Lake County, Illinois
→1997Armour's Warehouse — Seneca, La Salle County, Illinois
→1976Arts & Crafts Garden — Lake Forest, Lake County, Illinois
→1995Ashelford Hall — Esmond, De Kalb County, Illinois
→2003Atkinson Hall — Genesco, Henry County, Illinois
→1979Atlanta Public Library — Atlanta, Logan County, Illinois
→2012Auburn Gresham Bungalow Historic District — Chicago, Cook County, Illinois
→1970Auditorium Building, Roosevelt University ★ NHL — Chicago, Cook County, Illinois
→1984Aurora College Complex — Aurora, Kane County, Illinois
→1980Aurora Elks Lodge No. 705 — Aurora, Kane County, Illinois
→1985Austin Historic District — Chicago, Cook County, Illinois
→2006Austin Town Hall Park Historic District — Chicago, Cook County, Illinois
→2002Automatic Electric Company Building — Chicago, Cook County, Illinois
→1980AVR 661 — Chicago, Cook County, Illinois
→1998Ayer Public Library — Delavan, Tazewell County, Illinois
→1986Ayers Bank Building — Jacksonville, Morgan County, Illinois
→2009B.F. Goodrich Company Showroom — Chicago, Cook County, Illinois
→1980Babylon Bend Bridge — Ellisville, Fulton County, Illinois
→1979Bach, Emil, House — Chicago, Cook County, Illinois
→2001Bachmann, Charles and Naomi, House — Salem, Marion County, Illinois
→1990Badollet House — Salem, Marion County, Illinois
→1978Baha'i Temple — Wilmette, Cook County, Illinois
→2020Bailey--Rug Building — Champaign, Champaign County, Illinois
→1982Bailey-Michelet House — Wilmette, Cook County, Illinois
→2012Bailey, William S., House — Macomb, McDonough County, Illinois
→1974Baker, Frank J., House — Wilmette, Cook County, Illinois
→2010Baker, George, House — Glen Ellyn, Du Page County, Illinois
→1986Balaban & Katz Uptown Theatre — Chicago, Cook County, Illinois
→1979Balaban and Katz Chicago Theatre — Chicago, Cook County, Illinois
→1983Baldwin, Hiram, House — Kenilworth, Cook County, Illinois
→1998Baltimore and Ohio Railroad Depot — Flora, Clay County, Illinois
→1998Banta, Nathaniel Moore, House — Arlington Heights, Cook County, Illinois
→2017Baptist Retirement Home — Maywood, Cook County, Illinois
→2006Barber--Colman Company Historic District — Rockford, Winnebago County, Illinois
→1993Barber, Bryant H. and Lucie, House — Polo, Ogle County, Illinois
→1974Barber, Henry D., House — Polo, Ogle County, Illinois
→1986Barrington Historic District — Barrington, Cook County, Illinois
→1979Barry Historic District — Barry, Pike County, Illinois
→2004Bassett, Orland P., House — Hinsdale, Du Page County, Illinois
→1976Batavia Institute — Batavia, Kane County, Illinois
→1998Battery Rock — Cave-in-Rock, Hardin County, Illinois
→1983Beach, Thomas A., House — Fairbury, Livingston County, Illinois
→1994Beall--Orr House — Mt. Carmel, Wabash County, Illinois
→2000Beardstown Grand Opera House — Beardstown, Cass County, Illinois
→1991Beattie Park Mound Group — Rockford, Winnebago County, Illinois
→1982Beatty, Ross J., House — Highland Park, Lake County, Illinois
→1982Beatty, Ross, House — Highland Park, Lake County, Illinois
→1984Becker, A. G., Property — Highland Park, Lake County, Illinois
→1974Beecher Hall, Illinois College — Jacksonville, Morgan County, Illinois
→2013Beecher Mausoleum — Beecher, Will County, Illinois
→1983Beith, William, House — St. Charles, Kane County, Illinois
→1992Belden Stratford Hotel — Chicago, Cook County, Illinois
→1976Belleville Historic District — Belleville, St. Clair County, Illinois
→1984Belmont-Sheffield Trust and Savings Bank Building — Chicago, Cook County, Illinois
→1998Belmonte Flats — Chicago, Cook County, Illinois
→2007Belvidere Cafe, Motel and Gas Station — Litchfield, Montgomery County, Illinois
→1997Belvidere High School — Belvidere, Boone County, Illinois
→2012Belvidere North State Street Historic District — Belvidere, Boone County, Illinois
→2012Belvidere South State Street Historic District — Belvidere, Boone County, Illinois
→2023Benda House — Riverside, Cook County, Illinois
→1978Benjamin, Ruben M., House — Bloomington, McLean County, Illinois
→1983Benjaminville Friends Meetinghouse and Burial Ground — Holder, McLean County, Illinois
→1995Bennett, Edward H., House and Studio — Lake Forest, Lake County, Illinois
→2020Benson Water Tower — Benson, Woodford County, Illinois
→2010Berger Park — Chicago, Cook County, Illinois
→1999Berger--Kiel House — Mascoutah, St. Clair County, Illinois
→1980Berlemann House — Edwardsville, Madison County, Illinois
→1980Bernadotte Bridge — Smithfield, Fulton County, Illinois
→2003Bersbach, Alfred, House — Wilmette, Cook County, Illinois
→2002Berwyn Health Center — Berwyn, Cook County, Illinois
→2001Berwyn Municipal Building — Berwyn, Cook County, Illinois
→1987Best Brewing Company of Chicago Building — Chicago, Cook County, Illinois
→2018Best Building — Rock Island, Rock Island County, Illinois
→1989Beta Theta Pi Fraternity House — Champaign, Champaign County, Illinois
→1987Bethalto Village Hall — Bethalto, Madison County, Illinois
→2016Big Woods School — Aurora, Du Page County, Illinois
→1984Biograph Theater Building — Chicago, Cook County, Illinois
→2022Bishop’s Busy Big Store-Lyric Opera House — Elizabeth, Jo Daviess County, Illinois
→1985Black Hawk Museum and Lodge — Rock Island, Rock Island County, Illinois
→2023Black Homestead Farm — Carrollton, Greene County, Illinois
→1976Black's Store — Hampton, Rock Island County, Illinois
→1986Blackman, George, House — Hillsboro, Montgomery County, Illinois
→1986Blackstone Hotel — Chicago, Cook County, Illinois
→2008Blair, William McCormick, Estate — Lake Bluff, Lake County, Illinois
→1981Blakeman Bridge — Charleston, Coles County, Illinois
→1979Blanchard Hall — Wheaton, Du Page County, Illinois
→1982Bloom Township High School — Chicago Heights, Cook County, Illinois
→1994Bloomingdale School--Village Hall — Bloomingdale, Du Page County, Illinois
→1985Bloomington Central Business District — Bloomington, McLean County, Illinois
→2018Bloomington High School — Bloomington, McLean County, Illinois
→2006Bohemian National Cemetery — Chicago, Cook County, Illinois
→1989Bohlander, Jacob, House — Maywood, Cook County, Illinois
→2004Bolivia Road Bridge — Bolivia, Sangamon County, Illinois
→1982Boult, H. P., House — Springfield, Sangamon County, Illinois
→1978Bowen, Joseph T., Country Club — Waukegan, Lake County, Illinois
→1996Boyce Building — Chicago, Cook County, Illinois
→2009Bradley, B. Harley, House and Stable — Kankakee, Kankakee County, Illinois
→1982Braeside School — Highland Park, Lake County, Illinois
→1998Brainerd, Charles, House — Grafton, Jersey County, Illinois
→2004Brandon Road Lock and Dam Historic District — Joliet, Will County, Illinois
→1982Bressmer-Baker House — Springfield, Sangamon County, Illinois
→2000Bretz, John F., House and Warehouse — Springfield, Sangamon County, Illinois
→2016Bridge at Thirteenth Street — St. Francisville, Lawrence County, Illinois
→1980Briggs, Alexander, House — Charleston, Coles County, Illinois
→2017Brigham, Edmund D., House — Glencoe, Cook County, Illinois
→1978Brinkerhoff, George M., House — Springfield, Sangamon County, Illinois
→2016Bristol Congregational Church — Yorkville, Kendall County, Illinois
→2013Broadview Hotel — East St. Louis, St. Clair County, Illinois
→1998Broadway Historic District — Rock Island, Rock Island County, Illinois
→1984Brookner, Christopher, House — Dixon, Lee County, Illinois
→2002Brooks Catsup Bottle Water Tower — Collinsville, Madison County, Illinois
→1979Brower, Adolphus W., House — Sycamore, De Kalb County, Illinois
→2006Brown Shoe Company Factory — Litchfield, Montgomery County, Illinois
→2011Brown, Roger, Home and Studio — Chicago, Cook County, Illinois
→2000Brown, William, Building — Rockford, Winnebago County, Illinois
→1984Bruce, James, Round Barn — Freeport, Stephenson County, Illinois
→1999Brunk Farmstead — Rochester, Sangamon County, Illinois
→1998Brussels Historic District — Brussels, Calhoun County, Illinois
→1975Bryan, William Jennings, Boyhood Home — Salem, Marion County, Illinois
→2017Bryant, Francis E., House — Bement, Piatt County, Illinois
→1995Bryn Mawr Avenue Historic District — Chicago, Cook County, Illinois
→1980Buckeye Bridge — Smithfield, Fulton County, Illinois
→2000Buckingham Building — Chicago, Cook County, Illinois
→1983Buckles, Robert, Barn — Mount Pulaski, Logan County, Illinois
→1984Buena Park Historic District — Chicago, Cook County, Illinois
→2002Buffalo Grove Lime Kiln — Polo, Ogle County, Illinois
→1995Buffalo Township Public Library — Polo, Ogle County, Illinois
→1984Building at 1101-1113 Maple Avenue — Evanston, Cook County, Illinois
→1984Building at 1209-1217 Maple Avenue — Evanston, Cook County, Illinois
→1984Building at 1301-1303 Judson Avenue — Evanston, Cook County, Illinois
→1984Building at 1305-1307 Judson Avenue — Evanston, Cook County, Illinois
→1984Building at 1316 Maple Avenue — Evanston, Cook County, Illinois
→1980Building at 14--16 Pearson Street — Chicago, Cook County, Illinois
→1984Building at 1401-1407 Elmwood Avenue — Evanston, Cook County, Illinois
→1984Building at 1505-1509 Oak Avenue — Evanston, Cook County, Illinois
→1984Building at 1929-1931 Sherman Avenue — Evanston, Cook County, Illinois
→1997Building at 201 North Market Street — Champaign, Champaign County, Illinois
→1997Building at 203-205 North Market Street — Champaign, Champaign County, Illinois
→2020Building at 210-212 West North Street — Danville, Vermilion County, Illinois
→2011Building at 2440 N. Lakeview Avenue — Chicago, Cook County, Illinois
→1984Building at 2517 Central Street — Evanston, Cook County, Illinois
→1984Building at 2519 Central Street — Evanston, Cook County, Illinois
→1984Building at 2523 Central Street — Evanston, Cook County, Illinois
→1987Building at 257 East Delaware — Chicago, Cook County, Illinois
→2013Building at 320 West Oakdale Avenue — Chicago, Cook County, Illinois
→2007Building at 399 West Fullerton Parkway — Chicago, Cook County, Illinois
→1984Building at 417-419 Lee Street — Evanston, Cook County, Illinois
→1984Building at 548-606 Michigan Avenue — Evanston, Cook County, Illinois
→2001Building at 5510 North Sheridan — Chicago, Cook County, Illinois
→1984Building at 813-815 Forest Avenue — Evanston, Cook County, Illinois
→1999Building at 900 West Lake Street — Chicago, Cook County, Illinois
→1984Building at 923-925 Michigan Avenue — Evanston, Cook County, Illinois
→1984Building at 999 Michigan, 200 Lee — Evanston, Cook County, Illinois
→1986Buildings at 1104--1110 Seward — Evanston, Cook County, Illinois
→1984Buildings at 815-817 Brummel and 819-821 Brummel — Evanston, Cook County, Illinois
→1980Buildings at 860--880 Lake Shore Drive — Chicago, Cook County, Illinois
→2018Burgess-Osborne Memorial Auditorium — Mattoon, Coles County, Illinois
→1985Burlingham Building — Chicago, Cook County, Illinois
→1978Burnham Athenaeum — Champaign, Champaign County, Illinois
→2005Burnham, Anita Willets, Log House — Winnetka, Cook County, Illinois
→2018Burns, Dr. William, House — Polo, Ogle County, Illinois
→2013Bush Temple of Music — Chicago, Cook County, Illinois
→2003Butler School — Oak Brook, Du Page County, Illinois
→1966Cahokia Mounds ★ NHL — Collinsville, St. Clair County, Illinois
→1979Cairo Historic District — Cairo, Alexander County, Illinois
→1984Caldwell Farmstead — Chatham, Sangamon County, Illinois
→2010Calhoun, Mr. James Kent, House — Glencoe, Cook County, Illinois
→2003Calumet Park — Chicago, Cook County, Illinois
→1983Calumet Plant, R. R. Donnelly & Sons Company — Chicago, Cook County, Illinois
→1984Cambre House and Farm — Niota, Hancock County, Illinois
→1997Camelback Bridge — Normal, McLean County, Illinois
→1997Camp Butler National Cemetery — Springfield, Sangamon County, Illinois
→1984Camp Lincoln Commissary Building — Springfield, Sangamon County, Illinois
→2000Camp Logan National Guard Rifle Range Historic District — Zion, Lake County, Illinois
→1998Camp Mather--Camp Logan — Shawneetown, Gallatin County, Illinois
→1979Campana Factory — Batavia, Kane County, Illinois
→1979Campana Factory (Boundary Decrease) — Batavia, Kane County, Illinois
→1982Campbell, Albert, House — Highland Park, Lake County, Illinois
→2017Campground Church and Cemetery Site — Anna, Union County, Illinois
→1980Camptown Town Hall — Wasco, Kane County, Illinois
→2020Carithers Store Building — Table Grove, Fulton County, Illinois
→2017Carling Hotel — Chicago, Cook County, Illinois
→1980Carlinville Chapter House — Carlinville, Macoupin County, Illinois
→1976Carlinville Historic District — Carlinville, Macoupin County, Illinois
→1994Carlson Cottage — Chicago, Cook County, Illinois
→1980Carmi Chapter House — Carmi, White County, Illinois
→1983Carney, John, House — Troy, Madison County, Illinois
→1988Carr House — Monmouth, Warren County, Illinois
→1973Carroll County Courthouse — Mount Carroll, Carroll County, Illinois
→1985Carrollton Courthouse Square Historic District — Carrollton, Greene County, Illinois
→1970Carson, Pirie, Scott and Company ★ NHL — Chicago, Cook County, Illinois
→1974Carter, Frederick B., Jr., House — Evanston, Cook County, Illinois
→1986Carthage Courthouse Square Historic District — Carthage, Hancock County, Illinois
→1973Carthage Jail — Carthage, Hancock County, Illinois
→1984Castle Tower Apartments — Evanston, Cook County, Illinois
→2009Castlewood Terrace — Chicago, Cook County, Illinois
→1989Catlow Theatre — Barrington, Lake County, Illinois
→1975Cattle Bank — Champaign, Champaign County, Illinois
→1998Cave-In-Rock — Cave-In-Rock, Hardin County, Illinois
→2006Cedar Crest Addition Historic District — Normal, McLean County, Illinois
→1998Cemetery Road Bridge — Washington, Tazewell County, Illinois
→2018Central Geneva Historic District — Geneva, Kane County, Illinois
→1999Central House — Orangeville, Stephenson County, Illinois
→1978Central National Park Building — Peoria, Peoria County, Illinois
→2005Central Park Theater — Chicago, Cook County, Illinois
→1978Central Springfield Historic District — Springfield, Sangamon County, Illinois
→1986Central Springfield Historic District (Boundary Increase) — Springfield, Sangamon County, Illinois
→2012Centralia Commercial Historic District — Centralia, Marion County, Illinois
→2020Centralia Elk's Lodge, The — Centralia, Marion County, Illinois
→2012Cermak Road Bridge Historic District — Chicago, Cook County, Illinois
→2011Cermak, Anton, House — Chicago, Cook County, Illinois
→2006Chain of Rocks Bridge — Madison, Madison County, Illinois
→2005Chana School — Oregon, Ogle County, Illinois
→2006Chanute Field Historic District — Rantoul, Champaign County, Illinois
→1979Chapin and Gore Building — Chicago, Cook County, Illinois
→2021Charles Warrington Earle School — Chicago, Cook County, Illinois
→1970Charnley, James, House ★ NHL — Chicago, Cook County, Illinois
→1978Charter Oak Schoolhouse — Schuline, Randolph County, Illinois
→1978Chautauqua Auditorium — Shelbyville, Shelby County, Illinois
→1986Chemical Laboratory — Urbana, Champaign County, Illinois
→1993Chicago & North Western Railway Stone Arch Bridge — Roscoe, Winnebago County, Illinois
→1986Chicago and Eastern Illinois Railroad Depot — Tamms, Alexander County, Illinois
→2001Chicago and North Western Railroad Depot — Chicago, Cook County, Illinois
→2004Chicago and North Western Railway Power House — Chicago, Cook County, Illinois
→1975Chicago and Northwestern Depot — Wilmette, Cook County, Illinois
→1978Chicago and Northwestern Depot — Sycamore, De Kalb County, Illinois
→1975Chicago Avenue Water Tower and Pumping Station — Chicago, Cook County, Illinois
→1986Chicago Beach Hotel — Chicago, Cook County, Illinois
→1986Chicago Bee Building — Chicago, Cook County, Illinois
→1978Chicago Board of Trade Building ★ NHL — Chicago, Cook County, Illinois
→2005Chicago Club — Chicago, Cook County, Illinois
→2011Chicago Federal Center — Chicago, Cook County, Illinois
→2020Chicago Golf Club — Wheaton, Du Page County, Illinois
→1996Chicago Great Western Railroad Depot — Elizabeth, Jo Daviess County, Illinois
→1984Chicago Harbor Lighthouse — Chicago, Cook County, Illinois
→1966Chicago Portage National Historic Site — Forest View, Cook County, Illinois
→1972Chicago Public Library, Central Building — Chicago, Cook County, Illinois
→2011Chicago Sanitary and Ship Canal Historic District — Chicago, Cook County, Illinois
→1975Chicago Savings Bank Building — Chicago, Cook County, Illinois
→2001Chicago Telephone Company Kedzie Exchange — Chicago, Cook County, Illinois
→2001Chicago Varnish Company Building — Chicago, Cook County, Illinois
→1987Chicago, Burlington & Quincy Railroad Depot — Wyoming, Stark County, Illinois
→1993Chicago, Burlington & Quincy Railroad Depot — Plano, Kendall County, Illinois
→1993Chicago, Burlington & Quincy Railroad Station — Canton, Fulton County, Illinois
→1978Chicago, Burlington, & Quincy Roundhouse and Locomotive Shop — Aurora, Kane County, Illinois
→1979Chicago, Burlington, and Quincy Railroad Depot — Batavia, Kane County, Illinois
→1997Chicago, Burlington, and Quincy Railroad Depot — Oregon, Ogle County, Illinois
→1998Chicago, Milwaukee and St. Paul Railway Passenger Depot — Deerfield, Lake County, Illinois
→1995Chicago, Rock Island and Pacific Railroad Depot — Marseilles, La Salle County, Illinois
→1997Chick House — Rockford, Winnebago County, Illinois
→2000Childs, Robert A. and Mary, House — Hinsdale, Du Page County, Illinois
→1996Chipman, Edith, House — Vermont, Fulton County, Illinois
→2017Chipman, Edward, Public Library — Momence, Kankakee County, Illinois
→1994Chippiannock Cemetery — Rock Island, Rock Island County, Illinois
→1983Christ Church of Lower Kickapoo — Norwood Park, Peoria County, Illinois
→1980Christ Episcopal Church — Springfield, Sangamon County, Illinois
→1982Christ Episcopal Church — Joliet, Will County, Illinois
→1978Christian Hill Historic District — Alton, Madison County, Illinois
→2006Church of Christ — Perry, Pike County, Illinois
→1998Church of the Epiphany — Chicago, Cook County, Illinois
→1970Church of the Holy Family ★ NHL — Cahokia, St. Clair County, Illinois
→1979Church of the St. Sava Serbian Orthodox Monastery — Libertyville, Lake County, Illinois
→1982Churchill, Richard, House — Highland Park, Lake County, Illinois
→1999Churchville School — Bensenville, Du Page County, Illinois
→1992City and Town Hall — Rochelle, Ogle County, Illinois
→1979City Building — St. Charles, Kane County, Illinois
→2014Civilian Conservation Corps Camp Shiloh Encampment Site — Lerna, Coles County, Illinois
→1971Clarke, Henry B., House — Chicago, Cook County, Illinois
→2001Clarksburg Schoolhouse — Clarksburg, Shelby County, Illinois
→2015Clay County Courthouse — Louisville, Clay County, Illinois
→1998Clay County Jail — Louisville, Clay County, Illinois
→1979Clayson, George, House — Palatine, Cook County, Illinois
→1973Clayville Tavern — Pleasant Plains, Sangamon County, Illinois
→1978Cloud State Bank — McLeansboro, Hamilton County, Illinois
→1978Cloud, Aaron G., House — McLeansboro, Hamilton County, Illinois
→2009Cloud, Chalon Guard and Emma Blades, House — McLeansboro, Hamilton County, Illinois
→1972Clover Lawn ★ NHL — Bloomington, McLean County, Illinois
→1977Cluever, Richard, House — Maywood, Cook County, Illinois
→1991Coca Cola Company Building — Chicago, Cook County, Illinois
→1997Coca-Cola Bottling Company Building — Quincy, Adams County, Illinois
→2014Coffeen, William and Helen, House — Hinsdale, Du Page County, Illinois
→2020Colby-Petersen Farm — McHenry, McHenry County, Illinois
→1994Coleman Hardware Company Building — Morris, Grundy County, Illinois
→1978Coles County Courthouse — Charleston, Coles County, Illinois
→2002Collins, Daniel Dove, House — Collinsville, Madison County, Illinois
→2004Collinsville City Hall and Fire Station — Collinsville, Madison County, Illinois
→2005Collinsville Masonic Temple Lodge #712 A.F. & A.M. — Collinsville, Madison County, Illinois
→2023Collinsville Township High School — Collinsville, Madison County, Illinois
→1984Colonnade Court — Evanston, Cook County, Illinois
→1970Colony Steeple Building ★ NHL — Bishop Hill, Henry County, Illinois
→2003Columbus Park ★ NHL — Chicago, Cook County, Illinois
→1991Columbus Park, Children's Park — Chicago, Cook County, Illinois
→1993Colwell, E. B., and Company Department Store — Monmouth, Warren County, Illinois
→1983Commercial House — Keithsburg, Mercer County, Illinois
→2007Community House — Winnetka, Cook County, Illinois
→1976Compton, Arthur H., House ★ NHL — Chicago, Cook County, Illinois
→2017Compton, Dr. Charles, House — Springfield, Sangamon County, Illinois
→1983Condit, Cortland, House — Putman, Putnam County, Illinois
→2015Condon Brothers and R.H. Shumway Building — Rockford, Winnebago County, Illinois
→1979Conger, J. Newton, House — Oneida, Knox County, Illinois
→1988Connor House — Rock Island, Rock Island County, Illinois
→2007Continental and Commercial National Bank — Chicago, Cook County, Illinois
→1984Conway Building — Chicago, Cook County, Illinois
→1984Cook County Criminal Court Building — Chicago, Cook County, Illinois
→2006Cook County Hospital Administration Building — Chicago, Cook County, Illinois
→2001Cook Memorial Library — Libertyville, Lake County, Illinois
→1986Cook, John W., Hall — Normal, McLean County, Illinois
→1970Coonley, Avery, House ★ NHL — Riverside, Cook County, Illinois
→2007Coonley, Avery, School — Downers Grove, Du Page County, Illinois
→2019Copley Hospital — Aurora, Kane County, Illinois
→1978Copley, Col. Ira C., Mansion — Aurora, Kane County, Illinois
→2023Corbin, Dr. Joseph Carter, Gravesite — Forest Park, Cook County, Illinois
→2022Cornelia, The — Chicago, Cook County, Illinois
→2005Cornell Square — Chicago, Cook County, Illinois
→1979Coronado — Rockford, Winnebago County, Illinois
→1982Count's House — McHenry, McHenry County, Illinois
→1999Country Tea Room — East Dundee, Kane County, Illinois
→1989Covell, Lucein Boneparte, House — Richmond, McHenry County, Illinois
→2017Covent Hotel — Chicago, Cook County, Illinois
→1985Cox, George H., House — Bloomington, McLean County, Illinois
→2002Crane Company Building — Chicago, Cook County, Illinois
→2011Creamery Package Manufacturing Company Building — Chicago, Cook County, Illinois
→1985Crenshaw House — Equality, Gallatin County, Illinois
→1973Creole House — Prairie du Rocher, Randolph County, Illinois
→1989Crow Island School ★ NHL — Winnetka, Cook County, Illinois
→1981Cumberland County Courthouse — Toledo, Cumberland County, Illinois
→1980Cumberland Presbyterian Church — Peoria, Peoria County, Illinois
→1975Cunningham, Andrew, Farm — Virginia, Cass County, Illinois
→1978Curtis, Elijah P., House — Metropolis, Massac County, Illinois
→2013Curtiss--Wright Aeronautical University Building — Chicago, Cook County, Illinois
→2007Curtiss--Wright Hangars 1 and 2 — Cahokia, St. Clair County, Illinois
→2000Dale Building — Danville, Vermilion County, Illinois
→1974Dana, Susan Lawrence, House ★ NHL — Springfield, Sangamon County, Illinois
→1992Danville Branch, National Home for Disabled Volunteer Soldiers Historic District — Danville, Vermilion County, Illinois
→1978Danville Public Library — Danville, Vermilion County, Illinois
→2003Davis Square — Chicago, Cook County, Illinois
→2016Davis Theater — Chicago, Cook County, Illinois
→1982Davis, David, III & IV, House — Bloomington, McLean County, Illinois
→1976Dawes, Charles Gates, House ★ NHL — Evanston, Cook County, Illinois
→1985Dawson Brothers Plant — Chicago, Cook County, Illinois
→1975De Priest, Oscar Stanton, House ★ NHL — Chicago, Cook County, Illinois
→1976Dearborn Station — Chicago, Cook County, Illinois
→1985Decatur Downtown Historic District — Decatur, Macon County, Illinois
→1976Decatur Historic District — Decatur, Macon County, Illinois
→2003Deere, John, House — Moline, Rock Island County, Illinois
→1966Deere, John, House and Shop ★ NHL — Grand Detour, Ogle County, Illinois
→2006Deerpath Hill Estates Historic District — Lake Forest, Lake County, Illinois
→1992Deerpath Inn — Lake Forest, Lake County, Illinois
→1991Delavan Commercial Historic District — Delavan, Tazewell County, Illinois
→1974Delaware Building — Chicago, Cook County, Illinois
→2006Dell Rhea's Chicken Basket — Hinsdale, Du Page County, Illinois
→1990Delta Kappa Epsilon Fraternity House — Champaign, Champaign County, Illinois
→1990Delta Upsilon Fraternity House — Champaign, Champaign County, Illinois
→2002Dement--Zinser House — Washington, Tazewell County, Illinois
→1996Dempster Street Station — Skokie, Cook County, Illinois
→2005Denhart Bank Building — Washington, Tazewell County, Illinois
→1972Denkmann-Hauberg House — Rock Island, Rock Island County, Illinois
→2005Des Plaines Methodist Camp Ground — Des Plaines, Cook County, Illinois
→1973Dewes, Francis J., House — Chicago, Cook County, Illinois
→1985Dewey House — North Chicago, Lake County, Illinois
→1972Dickson Mounds — Lewistown, Fulton County, Illinois
→2009Dilg, Herbert A., House — Morton Grove, Cook County, Illinois
→1993Dilworth, Robert, House — Vermont, Fulton County, Illinois
→2012Dixon Downtown Historic District — Dixon, Lee County, Illinois
→1995Dorhmann--Buckman House — River Grove, Cook County, Illinois
→1976Douglas Tomb State Memorial — Chicago, Cook County, Illinois
→2004Downey Building — Atlanta, Logan County, Illinois
→2006Downtown Hinsdale Historic District — Hinsdale, Du Page County, Illinois
→2006Downtown Momence Historic District — Momence, Kankakee County, Illinois
→2005Downtown Peotone Historic District — Peotone, Will County, Illinois
→2013Downtown Plainfield Historic District — Plainfield, Will County, Illinois
→1983Downtown Quincy Historic District — Quincy, Adams County, Illinois
→1980Drake Hotel — Chicago, Cook County, Illinois
→2000Draser, George, Jr., House — Mascoutah, St. Clair County, Illinois
→2004Dresden Island Lock and Dam Historic District — Morris, Grundy County, Illinois
→2013Drucker, Robert and Suzanne, House — Wilmette, Cook County, Illinois
→1970Drummond, William E., House — River Forest, Cook County, Illinois
→1978Dryden, George B., House — Evanston, Cook County, Illinois
→1978Du Page County Courthouse — Wheaton, Du Page County, Illinois
→1990Du Quoin State Fairgrounds — Du Quoin, Perry County, Illinois
→1976Du Sable, Jean Baptiste Point, Homesite ★ NHL — Chicago, Cook County, Illinois
→1982Dubin, Henry, House — Highland Park, Lake County, Illinois
→1997Dulaney, Robert L., House — Marshall, Clark County, Illinois
→1979Duncan Manor — Towanda, McLean County, Illinois
→1980Duncan Mills Bridge — Lewistown, Fulton County, Illinois
→1971Duncan, Joseph, House — Jacksonville, Morgan County, Illinois
→1975Dundee Township Historic District — Dundee and, Kane County, Illinois
→1982Dunham, Arthur J., House — Berwyn, Cook County, Illinois
→2007Dunnan--Hampton House — Paxton, Ford County, Illinois
→2020Dupage Theatre and Dupage Shoppes — Lombard, Du Page County, Illinois
→2016Dupont, John, House — New Burnside, Johnson County, Illinois
→1976Durant House — St. Charles, Kane County, Illinois
→1996Durell, William Franklin and Rebecca, House — Vermont, Fulton County, Illinois
→2006Durham--Perry Farmstead — Bourbonnais, Kankakee County, Illinois
→1979Dutch Mill — Batavia, Kane County, Illinois
→1993Duvall--Ash Farmstead — Fiatt, Fulton County, Illinois
→1982Dwight Chicago and Alton Railroad Depot — Dwight, Livingston County, Illinois
→2001Dycus, Floyd and Glenora, House — Brownstown, Fayette County, Illinois
→1994Eagle Hotel — Wilmington, Will County, Illinois
→1982East Dubuque School — East Dubuque, Jo Daviess County, Illinois
→1987East Grove Street District--Bloomington — Bloomington, McLean County, Illinois
→1986East Park Towers — Chicago, Cook County, Illinois
→1991East Ravenswood Historic District — Chicago, Cook County, Illinois
→1980East Rockford Historic District — Rockford, Winnebago County, Illinois
→2009East Village Historic District — Chicago, Cook County, Illinois
→2009East Waterford School — Lewistown, Fulton County, Illinois
→1984Ebenezer Methodist Episcopal Chapel and Cemetery — Golden, Adams County, Illinois
→2016Ebenezer Missionary Baptist Church — Chicago, Cook County, Illinois
→1981Edgar County Courthouse — Paris, Edgar County, Illinois
→1994Edgewater Beach Apartments — Chicago, Cook County, Illinois
→2007Edison Park — Chicago, Cook County, Illinois
→1969Edwards Place — Springfield, Sangamon County, Illinois
→1980Edwardsville Chapter House — Edwardsville, Madison County, Illinois
→1985Effingham County Courthouse — Effingham, Effingham County, Illinois
→1978Egyptian Theatre — De Kalb, De Kalb County, Illinois
→1986Eighth Regiment Armory — Chicago, Cook County, Illinois
→1994El Paso Public Library — El Paso, Woodford County, Illinois
→1995Eldorado City Hall — Eldorado, Saline County, Illinois
→1999Eldred, James John, House — Eldrid, Greene County, Illinois
→1976Elgin Academy — Elgin, Kane County, Illinois
→1983Elgin Historic District — Elgin, Kane County, Illinois
→1994Elgin National Watch Company Observatory — Elgin, Kane County, Illinois
→2002Elgin Tower Building — Elgin, Kane County, Illinois
→2008Elizabeth Place — Geneva, Kane County, Illinois
→1980Elliott Street Historic District — Olney, Richland County, Illinois
→1975Ellwood Mansion — De Kalb, De Kalb County, Illinois
→2000Elm Street Court — Urbana, Champaign County, Illinois
→1978Elmwood Cemetery Gates — Sycamore, De Kalb County, Illinois
→1973Elsah Historic District — Elsah, Jersey County, Illinois
→2000Ely, Mrs. C. Morse, House — Lake Bluff, Lake County, Illinois
→1998Embarras River Bridge — Newton, Jasper County, Illinois
→2022Emerson-Keith House — Rockford, Winnebago County, Illinois
→2004Emery, Jr., William H., House — Elmhurst, Du Page County, Illinois
→2018Emmanuel Episcopal Church — LaGrange, Cook County, Illinois
→1984Emmel Building — Chicago, Cook County, Illinois
→1996Emmert--Zippel House — Granite City, Madison County, Illinois
→2009Episcopal Church of the Atonement and Parish House, The — Chicago, Cook County, Illinois
→2008Epworth Methodist Episcopal Church — Chicago, Cook County, Illinois
→2006Eugene Field Park — Chicago, Cook County, Illinois
→1980Eureka College Administration and Chapel — Eureka, Woodford County, Illinois
→2010Eureka College Campus Historic District — Eureka, Woodford County, Illinois
→1980Evanston Lakeshore Historic District — Evanston, Cook County, Illinois
→1983Evanston Ridge Historic District — Evanston, Cook County, Illinois
→1984Evanston Towers — Evanston, Cook County, Illinois
→1982Evert House — Highland Park, Lake County, Illinois
→1987Exchange Bank — Golden, Adams County, Illinois
→1976Executive Mansion — Springfield, Sangamon County, Illinois
→1984Fabyan Villa — Geneva, Kane County, Illinois
→2021Fagen, Mildred and Abel, House — Lake Forest, Lake County, Illinois
→1988Fairbanks, Morse and Company Building — Chicago, Cook County, Illinois
→1996Fairbury City Hall — Fairbury, Livingston County, Illinois
→2021Fairview Sanatorium — Normal, McLean County, Illinois
→2007Falconer Bungalow Historic District — Chicago, Cook County, Illinois
→1996Fall Creek Stone Arch Bridge — Payson, Adams County, Illinois
→1992Farm Creek Section ★ NHL — East Peoria, Tazewell County, Illinois
→1989Farm House — Urbana, Champaign County, Illinois
→2004Farnsworth House ★ NHL — Plano, Kendall County, Illinois
→1984Fehr, Charles, Round Barn — Orangeville, Stephenson County, Illinois
→1980Felt, Cyrus, House — Hamilton, Hancock County, Illinois
→1975Field Museum of Natural History — Chicago, Cook County, Illinois
→1991Field, Marshall, Garden Apartments — Chicago, Cook County, Illinois
→1990Fife Opera House — Palestine, Crawford County, Illinois
→1999Fifteenth Street and Oklahoma Avenue Brick Street — Mattoon, Coles County, Illinois
→1991Fire Barn 5 — Elgin, Kane County, Illinois
→1978First Church of Lombard — Lombard, Du Page County, Illinois
→2003First Congregational Church — Marshall, Clark County, Illinois
→1977First Congregational Church of Austin — Chicago, Cook County, Illinois
→1996First Congregational Church of LaMoille — LaMoille, Bureau County, Illinois
→1995First Congregational Church of Sterling — Sterling, Whiteside County, Illinois
→2006First Congregational Church of Western Springs — Western Springs, Cook County, Illinois
→2019First Congregational Church, Des Plaines — Des Plaines, Cook County, Illinois
→1982First Methodist Church of Batavia — Batavia, Kane County, Illinois
→2018First National Bank Building — Danville, Vermilion County, Illinois
→1982First Presbyterian Church — Vandalia, Fayette County, Illinois
→1966First Self-Sustaining Nuclear Reaction, Site of ★ NHL — Chicago, Cook County, Illinois
→1975First State Bank of Manlius — Manlius, Bureau County, Illinois
→1980First Universalist Church — Elgin, Kane County, Illinois
→2001Fischer Theater — Danville, Vermilion County, Illinois
→1976Fisher Building — Chicago, Cook County, Illinois
→2000Fisher Building--Latham Block — Springfield, Sangamon County, Illinois
→2012Fisher--Chapman Farmstead — Jerseyville, Jersey County, Illinois
→1998Fisher--Nash--Griggs House — Ottawa, La Salle County, Illinois
→1975Fithian House — Danville, Vermilion County, Illinois
→1984Fitzpatrick House — Lockport, Will County, Illinois
→1973Flagg Township Public Library — Rochelle, Ogle County, Illinois
→1993Flagg, Cornelius, Farmstead — Sherman, Sangamon County, Illinois
→1986Flamingo-On-The-Lake Apartments — Chicago, Cook County, Illinois
→1975Flanagan, Judge, Residence — Peoria, Peoria County, Illinois
→1991Flanders House — Plainfield, Will County, Illinois
→2003Flat Iron Building — Chicago Heights, Cook County, Illinois
→1991Fletcher, Ruffin Drew, House — Streator, La Salle County, Illinois
→1982Florsheim, Harold, House — Highland Park, Lake County, Illinois
→2017Flower, Lucy, Technical High School for Girls — Chicago, Cook County, Illinois
→1985Foley, Jennie, Building — Chicago, Cook County, Illinois
→1984Foley, Stephan A., House — Lincoln, Logan County, Illinois
→1985Ford Airport Hanger — Lansing, Cook County, Illinois
→2016Ford, Sam and Ruth Van Sickle, House — Aurora, Kane County, Illinois
→1984Forest, The, and Annex — Evanston, Cook County, Illinois
→1984Fort Armstrong Hotel — Rock Island, Rock Island County, Illinois
→1980Fort Armstrong Theatre — Rock Island, Rock Island County, Illinois
→1966Fort de Chartres ★ NHL — Prairie du Rocher, Randolph County, Illinois
→1982Fort Dearborn Hotel — Chicago, Cook County, Illinois
→1971Fort Massac Site — Metropolis, Massac County, Illinois
→1980Fort Sheridan Historic District ★ NHL — Fort Sheridan, Lake County, Illinois
→2019Forum, The — Chicago, Cook County, Illinois
→1978Fountain Creek Bridge — Waterloo, Monroe County, Illinois
→1984Fountain Plaza Apartments — Evanston, Cook County, Illinois
→1999Four Nineteen Building — Chicago, Cook County, Illinois
→1975Fourth Presbyterian Church of Chicago — Chicago, Cook County, Illinois
→1976Fox River House — Aurora, Kane County, Illinois
→1987France Hotel — Paris, Edgar County, Illinois
→1975Francis, Frederick, Woodland Palace — Kewanee, Henry County, Illinois
→1992Frangenheim, William, House — Maywood, Cook County, Illinois
→1973Frank Lloyd Wright-Prairie School of Architecture Historic District — Oak Park, Cook County, Illinois
→2009Frank Lloyd Wright-Prairie School of Architecture Historic District (Boundary Increase) — Oak Park, Cook County, Illinois
→1999Franklin County Jail — Benton, Franklin County, Illinois
→1976Franklin Square — Bloomington, McLean County, Illinois
→1998Franks, Charles, House — Lanark, Carroll County, Illinois
→2019Fredrick, Louis, House — Barrington, Lake County, Illinois
→1992Freeman--Brewer--Sawyer House — Hillsboro, Montgomery County, Illinois
→1980Freeman, Clarkson W., House — Springfield, Sangamon County, Illinois
→2011Frentess, Henry N., Farmstead — East Dubuque, Jo Daviess County, Illinois
→1998Fulkerson, Col. William H., Farmstead — Jerseyville, Jersey County, Illinois
→2002Fuller Park — Chicago, Cook County, Illinois
→2006Fuller, R. Buckminster, and Anne Hewlett Dome Home — Carbondale, Jackson County, Illinois
→2012Fulton Commercial Historic District — Fulton, Whiteside County, Illinois
→1985Gage Group--Ascher, Keith, and Gage Buildings — Chicago, Cook County, Illinois
→1982Gale, Judge Jacob, House — Peoria, Peoria County, Illinois
→1970Gale, Mrs. Thomas H., House — Oak Park, Cook County, Illinois
→1973Gale, Walter, House — Oak Park, Cook County, Illinois
→1969Galena Historic District — Galena, Jo Daviess County, Illinois
→1982Galva Opera House — Galva, Henry County, Illinois
→1994Gamma Phi Beta Sorority House — Urbana, Champaign County, Illinois
→1984GAR Memorial Building — Aurora, Kane County, Illinois
→2005Garden Homes Historic District — Chicago, Cook County, Illinois
→1979Gardner, Robert W., House — Quincy, Adams County, Illinois
→2017Garfield Elementary School — Moline, Rock Island County, Illinois
→1978Garfield Farm and Tavern — Campton Hills, Kane County, Illinois
→1993Garfield Park — Chicago, Cook County, Illinois
→2006Garrison School — Rockford, Winnebago County, Illinois
→2012Garrison--Coronado--Haskill Historic District — Rockford, Winnebago County, Illinois
→2009Garvey, Hugh M., House — Leland Grove, Sangamon County, Illinois
→1977Gauler, John, Houses — Chicago, Cook County, Illinois
→2007Geister, Christian, House — Algonquin, McHenry County, Illinois
→1973General Dean Suspension Bridge — Carlyle, Clinton County, Illinois
→1989Geneva Country Day School — Geneva, Kane County, Illinois
→2006George, G.J., House — Fairfield, Wayne County, Illinois
→1982George, Ron, Round Barn — Romeoville, Will County, Illinois
→2005Georgian, The — Champaign, Champaign County, Illinois
→1976Germania Club — Chicago, Cook County, Illinois
→1974Getty Tomb — Chicago, Cook County, Illinois
→1982Geyso, Mrs. Frank, Houses — Highland Park, Lake County, Illinois
→1985Giant City State Park Lodge and Cabins — Makanda, Jackson County, Illinois
→2002Giant City Stone Fort Site — Makanda, Jackson County, Illinois
→1992Gibbs, William and Caroline, House — Maywood, Cook County, Illinois
→1980Gifford-Davidson House — Elgin, Kane County, Illinois
→2020Gildersleeve House — Hudson, McLean County, Illinois
→2005Glasner, William A., House — Glencoe, Cook County, Illinois
→2014Glen Carbon Grade School — Glen Carbon, Madison County, Illinois
→2018Glen Carbon Village Hall and Firehouse — Glen Carbon, Madison County, Illinois
→2013Glen Ellyn Downtown North Historic District — Glen Ellyn, Du Page County, Illinois
→2013Glen Ellyn Downtown South Historic District — Glen Ellyn, Du Page County, Illinois
→1984Glen Ellyn Main Street Historic District — Glen Ellyn, Du Page County, Illinois
→2020Glenwood School — Cissna Park, Iroquois County, Illinois
→1970Glessner, John J., House ★ NHL — Chicago, Cook County, Illinois
→1973Glidden, Joseph F., House — De Kalb, De Kalb County, Illinois
→1986Goddard Chapel — Marion, Williamson County, Illinois
→1979Godfrey, Benjamin, Memorial Chapel — Godfrey, Madison County, Illinois
→1976Golconda Historic District — Golconda, Pope County, Illinois
→1978Gold Coast Historic District — Chicago, Cook County, Illinois
→2006Goldblatt Bros. Department Store — Chicago, Cook County, Illinois
→1985Gottschalk, Fred, Grocery Store — Springfield, Sangamon County, Illinois
→2001Graceland Cemetery — Chicago, Cook County, Illinois
→1994Grafton Bank — Grafton, Jersey County, Illinois
→2022Grafton Boat Works — Grafton, Jersey County, Illinois
→1994Grafton Historic District — Grafton, Jersey County, Illinois
→1982Graham Building — Aurora, Kane County, Illinois
→1979Graham-Ginestra House — Rockford, Winnebago County, Illinois
→1989Graham, Cong. James M., House — Springfield, Sangamon County, Illinois
→1976Grand Army of the Republic Memorial Hall — Peoria, Peoria County, Illinois
→2006Grand Crossing Park — Chicago, Cook County, Illinois
→2005Grand Theater — Wheaton, Du Page County, Illinois
→1979Grand Tower Mining, Manufacturing and Transportation Company Site — Grand Tower, Jackson County, Illinois
→1996Grand View Drive — Peoria, Peoria County, Illinois
→1990Grange Hall — Murphysboro, Jackson County, Illinois
→2017Granite City YMCA — Granite City, Madison County, Illinois
→1993Grant Park — Chicago, Cook County, Illinois
→1966Grant, Ulysses S., House ★ NHL — Galena, Jo Daviess County, Illinois
→1982Granville-Mott House — Highland Park, Lake County, Illinois
→2021Graue Mill — Oak Brook, Du Page County, Illinois
→1979Gray-Watkins Mill — Montgomery, Kane County, Illinois
→1992Gray, William W., House — Grayville, White County, Illinois
→1986Great Lakes Naval Training Station — Waukegan, Lake County, Illinois
→2014Great Western Railroad Depot — Springfield, Sangamon County, Illinois
→1977Greek Revival Cottage — Urbana, Champaign County, Illinois
→2011Greeley, Dr. Paul W. and Eunice, House — Winnetka, Cook County, Illinois
→1995Green Bay Road Historic District — Lake Forest, Lake County, Illinois
→1991Greene County Almshouse — Carrolton, Greene County, Illinois
→1997Greenlee, Robert, House — Bloomington, McLean County, Illinois
→1991Greenup Commercial Historic District — Greenup, Cumberland County, Illinois
→1995Greenville Public Library — Greenville, Bond County, Illinois
→2012Greenwood Cemetery Chapel and Crematory — Rockford, Winnebago County, Illinois
→1983Greenwood Cottage — Princeton, Bureau County, Illinois
→1984Greenwood, The — Evanston, Cook County, Illinois
→1980Gregg, William L., House — Westmont, Du Page County, Illinois
→1993Gridley, Mrs., A. W., House — Batavia, Kane County, Illinois
→1980Grierson, Gen. Benjamin Henry, House — Jacksonville, Morgan County, Illinois
→2003Griffith, John, Store Building — Lake Bluff, Lake County, Illinois
→1982Griffiths, John W., Mansion — Chicago, Cook County, Illinois
→1978Griggs, Clark R., House — Urbana, Champaign County, Illinois
→1979Griggsville Historic District — Griggsville, Pike County, Illinois
→1999Griggsville Landing Lime Kiln — Valley City, Pike County, Illinois
→1987Grigsby Estate — Barrington Hills, Lake County, Illinois
→1993Groesbeck, Abraham, House — Chicago, Cook County, Illinois
→1991Gross Point Village Hall — Wilmette, Cook County, Illinois
→1982Grossdale Station — Brookfield, Cook County, Illinois
→1976Grosse Point Light Station ★ NHL — Evanston, Cook County, Illinois
→1992Grow, Caroline, House — Maywood, Cook County, Illinois
→1990Grubbs, Samuel Moody, House — Litchfield, Montgomery County, Illinois
→1974Guertler House — Alton, Madison County, Illinois
→2002Gunderson Historic District — Oak Park, Cook County, Illinois
→1978Gundlach-Grosse House — Columbia, Monroe County, Illinois
→1979Gurler, George H., House — De Kalb, De Kalb County, Illinois
→1985Guyon Hotel — Chicago, Cook County, Illinois
→1994Haas, L., Store — Carmi, White County, Illinois
→2020Haight Village Historic District — Rockford, Winnebago County, Illinois
→1980Haish Memorial Library — De Kalb, De Kalb County, Illinois
→1980Halderman, Nathaniel, House — Mount Carroll, Carroll County, Illinois
→2014Hall, David, House — Lake Villa, Lake County, Illinois
→1973Halsted, Ann, House — Chicago, Cook County, Illinois
→1996Hamer, Edward, House — Vermont, Fulton County, Illinois
→1996Hamer, Patterson, House — Vermont, Fulton County, Illinois
→1995Hamilton Park — Chicago, Cook County, Illinois
→1998Hamilton Primary School — Otterville, Jersey County, Illinois
→1978Hamilton, John M., House — Bloomington, McLean County, Illinois
→1982Hamilton, Robert W., House — Murphysboro, Jackson County, Illinois
→2018Hampshire Colony Congregational Church — Princeton, Bureau County, Illinois
→1998Hangar 1, Naval Air Station--Glenview — Glenview, Cook County, Illinois
→2006Hanson, Anton, E., House — Chicago, Cook County, Illinois
→1984Harbach, Gerald, Round Barn — Eleroy, Stephenson County, Illinois
→2001Harlan Hall — Marshall, Clark County, Illinois
→2004Harper, John B., House — Palestine, Crawford County, Illinois
→1983Harrer Building — Skokie, Cook County, Illinois
→1998Harrisburg City Hall — Harrisburg, Saline County, Illinois
→2020Harrison St. Bridge — Charleston, Coles County, Illinois
→1974Haskell Playhouse — Alton, Madison County, Illinois
→2007Hatch, William H., House — River Forest, Cook County, Illinois
→2016Hauge Lutheran Church — Sheridan, La Salle County, Illinois
→1976Hauptgebaude — Elmhurst, Du Page County, Illinois
→1994Havana Public Library — Havana, Mason County, Illinois
→1993Havana Water Tower — Havana, Mason County, Illinois
→1991Hawes, J. H., Elevator — Atlanta, Logan County, Illinois
→1997Haymarket Martyrs' Monument ★ NHL — Forest Park, Cook County, Illinois
→1980Hayward-Hill House — Hillsboro, Montgomery County, Illinois
→1982Hazel Avenue Prospect Avenue Historic District — Highland Park, Lake County, Illinois
→1994Hazen Bridge — Mohomet, Champaign County, Illinois
→1995Health Education Building — Charleston, Coles County, Illinois
→1985Healy Chapel — Aurora, Kane County, Illinois
→2023Heart Theater — Effingham, Effingham County, Illinois
→1994Heck, John, House — Lockport, Will County, Illinois
→2009Hegeler I, Julius W., House — LaSalle, La Salle County, Illinois
→1995Hegeler--Carus Mansion ★ NHL — La Salle, La Salle County, Illinois
→2014Heimberger House — Springfield, Sangamon County, Illinois
→1972Heller, Isadore H., House ★ NHL — Chicago, Cook County, Illinois
→2002Henderson, Frank B., House — Elmhurst, Du Page County, Illinois
→2000Hennessy, Cornelius, Building — Murphysboro, Jackson County, Illinois
→2004Henry County Courthouse — Cambridge, Henry County, Illinois
→1979Henry, Jacob H., House — Joliet, Will County, Illinois
→2021Henson House — Villa Grove, Douglas County, Illinois
→1992Herget, Carl, Mansion — Pekin, Tazewell County, Illinois
→1985Hermitage Apartments — Chicago, Cook County, Illinois
→1980Herrick Cobblestone — Rockford, Winnebago County, Illinois
→2000Heurtley, Arthur, House ★ NHL — Oak Park, Cook County, Illinois
→1979Hibbard, Charles H., House — Marengo, McHenry County, Illinois
→2006Hibbard, Frank, Estate House--Deerpath Hill Estates — Lake Forest, Lake County, Illinois
→1984Hickox Apartments — Springfield, Sangamon County, Illinois
→1982Hickox, Virgil, House — Springfield, Sangamon County, Illinois
→1978Hickox, Warren, House — Kankakee, Kankakee County, Illinois
→1982Highland Park Water Tower — Highland Park, Lake County, Illinois
→1984Hillcrest Apartment — Evanston, Cook County, Illinois
→2013Hines, Edward Jr., Veterans Administration Hospital Historic District — Hines, Cook County, Illinois
→1984Hinman Apartments — Evanston, Cook County, Illinois
→1974Hitchcock, Charles, Hall — Chicago, Cook County, Illinois
→1985Hitt, Samuel M., House — Mount Morris, Ogle County, Illinois
→2021Hobbs Building — Aurora, Kane County, Illinois
→2007Hoblit House — Lincoln, Logan County, Illinois
→1980Hodges House — Carrollton, Greene County, Illinois
→1978Hofmann Tower — Lyons, Cook County, Illinois
→2008Hohf, Dr. Robert, House — Kenilworth, Cook County, Illinois
→1973Holcomb, William H., House — Rochelle, Ogle County, Illinois
→1988Holland Apartments — Danville, Vermilion County, Illinois
→1982Holmes, Samuel, House — Highland Park, Lake County, Illinois
→1999Holy Cross Church — Batavia, Kane County, Illinois
→2003Holy Family Church — North Chicago, Lake County, Illinois
→2000Holy Name Cathedral — Chicago, Cook County, Illinois
→1983Holy Trinity Church Rectory and Convent — Bloomington, McLean County, Illinois
→1976Holy Trinity Russian Orthodox Cathedral and Rectory — Chicago, Cook County, Illinois
→2007Home Bank and Trust Company — Chicago, Cook County, Illinois
→2006Homestead, The — Evanston, Cook County, Illinois
→1985Hoopes-Cunningham Mansion — Hoopeston, Vermilion County, Illinois
→1996Hoopes, William, House — Vermont, Fulton County, Illinois
→2002Hoopeston Carnegie Public Library — Hoopeston, Vermilion County, Illinois
→2001Hopkinson, Ambrose, House — Olney, Richland County, Illinois
→1972Hossack, John, House — Ottawa, La Salle County, Illinois
→2005Hotel Arthur — Aurora, Kane County, Illinois
→1982Hotel Aurora — Aurora, Kane County, Illinois
→1978Hotel Baker — St. Charles, Kane County, Illinois
→2018Hotel Belleville — Belleville, St. Clair County, Illinois
→1986Hotel Del Prado — Chicago, Cook County, Illinois
→1988Hotel Kaskaskia — LaSalle, La Salle County, Illinois
→2007Hotel Kaskaskia Buildings (Boundary Increase) — LaSalle, La Salle County, Illinois
→1995Hotel Roodhouse — Roodhouse, Greene County, Illinois
→1995Hotel St. Benedict Flats — Chicago, Cook County, Illinois
→2000Hotel Stratford — Alton, Madison County, Illinois
→1994Hotel Waukegan — Waukegan, Lake County, Illinois
→1982Hotel Windermere East — Chicago, Cook County, Illinois
→2006House at 380 Chiltern Drive--Deerpath Hill Estates — Lake Forest, Lake County, Illinois
→2006House at 965 Castlegate Court--Deerpath Hill Estates — Lake Forest, Lake County, Illinois
→1979Hubbard House — Hudson, McLean County, Illinois
→2011Hubbard, Joel H., House — St. Charles, Kane County, Illinois
→1966Hull House ★ NHL — Chicago, Cook County, Illinois
→2006Hull, William H., House — Murphysboro, Jackson County, Illinois
→1992Humboldt Park — Chicago, Cook County, Illinois
→1982Humer Building — Highland Park, Lake County, Illinois
→2005Humphrey, John, House — Orland Park, Cook County, Illinois
→1982Hunt House — St. Charles, Kane County, Illinois
→2008Hunter--Hattenburg House — Kankakee, Kankakee County, Illinois
→1996Hunter, Lucinda, House — Vermont, Fulton County, Illinois
→2020Hyatt House Hotel — Lincolnwood, Cook County, Illinois
→1979Hyde Park-Kenwood Historic District — Chicago, Cook County, Illinois
→1986Hyde Park-Kenwood Historic District (Boundary Increase II) — Chicago, Cook County, Illinois
→1984Hyde Park-Kenwood Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→2010IBM Building — Chicago, Cook County, Illinois
→1978Iles, Elijah, House — Springfield, Sangamon County, Illinois
→1966Illinois and Michigan Canal ★ NHL — Joliet, Will County, Illinois
→1994Illinois Central Railroad and Toledo, Peoria, and Western Railroad Freight House — El Paso, Woodford County, Illinois
→1999Illinois Central Railroad Depot — Ullin, Pulaski County, Illinois
→2000Illinois Central Railroad Depot — Kankakee, Kankakee County, Illinois
→2002Illinois Central Railroad Depot — Mattoon, Coles County, Illinois
→2002Illinois Central Railroad Passenger Depot — Carbondale, Jackson County, Illinois
→1998Illinois Central Railroad Water Tower and Pump House — Kinmundy, Marion County, Illinois
→1987Illinois Central Stone Arch Railroad Bridges — Dixon, Lee County, Illinois
→1985Illinois Department of Mines and Minerals-Springfield Mine Rescue Station — Springfield, Sangamon County, Illinois
→1998Illinois Industrial School for Girls — Park Ridge, Cook County, Illinois
→1973Illinois Iron Furnace — Rosiclare, Hardin County, Illinois
→2000Illinois National Guard Armory — Rockford, Winnebago County, Illinois
→1998Illinois Route 4--North of Auburn — Auburn, Sangamon County, Illinois
→1984Illinois State Bank Building — Assumption, Christian County, Illinois
→1985Illinois State Capitol — Springfield, Sangamon County, Illinois
→1990Illinois State Fairgrounds — Springfield, Sangamon County, Illinois
→2007Illinois State Police Office, Pontiac — Pontiac, Livingston County, Illinois
→2006Illinois Traction Building — Champaign, Champaign County, Illinois
→1978Illinois Traction System Mackinaw Depot — Mackinaw, Tazewell County, Illinois
→2004Illinois Waterway Project Office — Peoria, Peoria County, Illinois
→1977Immaculata High School — Chicago, Cook County, Illinois
→2001Immanuel Evangelical Church — Hinsdale, Du Page County, Illinois
→2009Independence Park — Chicago, Cook County, Illinois
→1995Indian Boundary Park — Chicago, Cook County, Illinois
→1980Indian Ford Bridge — London Mills, Fulton County, Illinois
→2001Indian Hill Manor and Farm Historic District — Rockford, Winnebago County, Illinois
→2009Indian Statue — Oregon, Ogle County, Illinois
→2009Inland Steel Building — Chicago, Cook County, Illinois
→1989Inman Hotel — Champaign, Champaign County, Illinois
→2005International Harvester Building — Peoria, Peoria County, Illinois
→2008International Tailoring Company Building — Chicago, Cook County, Illinois
→2021Irving, James B., House — Evanston, Cook County, Illinois
→2000Ives, Gideon, House — New Boston, Mercer County, Illinois
→2015Jackson County Courthouse — Murphysboro, Jackson County, Illinois
→2010Jackson Shore Apartments — Chicago, Cook County, Illinois
→1978Jacksonville Historic District — Jacksonville, Morgan County, Illinois
→1980Jacksonville Labor Temple — Jacksonville, Morgan County, Illinois
→2000Jacksonville Public Library — Jacksonville, Morgan County, Illinois
→1982Jacoby, Lysander, House — Rockford, Winnebago County, Illinois
→1982James, Jean Butz, Museum of the Highland Park Historical Society — Highland Park, Lake County, Illinois
→2003Jameson, H.D., House — Rockton, Winnebago County, Illinois
→1974Jarrot, Nicholas, Mansion ★ NHL — Cahokia, St. Clair County, Illinois
→1988Jarvis, William W., House — Troy, Madison County, Illinois
→2006Jefferson Park — Chicago, Cook County, Illinois
→1986Jeffery--Cyril Historic District — Chicago, Cook County, Illinois
→1995Jehle, Louis, House — Pana, Christian County, Illinois
→2006Jennings Ford Automobile Dealership — Springfield, Sangamon County, Illinois
→1984Jensen, Chris, Round Barn — Lena, Stephenson County, Illinois
→1991Jensen, Jens, Summer House and Studio — Highland Park, Lake County, Illinois
→1986Jersey County Courthouse — Jerseyville, Jersey County, Illinois
→1986Jerseyville Downtown Historic District — Jerseyville, Jersey County, Illinois
→2021Jerseyville First Presbyterian Church — Jerseyville, Jersey County, Illinois
→2020Jewel Tea Company, Inc. — Barrington, Lake County, Illinois
→1974Jewelers' Building — Chicago, Cook County, Illinois
→1978Jewish People's Institute — Chicago, Cook County, Illinois
→2010Johnson County Courthouse — Vienna, Johnson County, Illinois
→1982Johnson, Olof, House — Galva, Henry County, Illinois
→2006Joilet YMCA — Joliet, Will County, Illinois
→1980Joliet East Side Historic District — Joliet, Will County, Illinois
→1980Joliet Municipal Airport — Joliet, Will County, Illinois
→1991Joliet Steel Works — Joliet, Will County, Illinois
→1982Joliet Township High School — Joliet, Will County, Illinois
→1990Joliet, Louis, Hotel — Joliet, Will County, Illinois
→1978Jones House — Pontiac, Livingston County, Illinois
→1972Jubilee College — Kickapoo, Peoria County, Illinois
→1990Judah, Noble, Estate — Lake Forest, Lake County, Illinois
→1983Judd, C. H., House — Belle, Jefferson County, Illinois
→1984Judson, The — Evanston, Cook County, Illinois
→2010K-Town Historic District — Chicago, Cook County, Illinois
→1994Kamp Store — Kampsville, Calhoun County, Illinois
→2007Kankakee County Courthouse — Kankakee, Kankakee County, Illinois
→1995Kankakee State Hospital Historic District — Kankakee, Kankakee County, Illinois
→1990Kappa Delta Rho Fraternity House — Champaign, Champaign County, Illinois
→2004Kappa Kappa Gamma Sorority House — Urbana, Champaign County, Illinois
→1989Kappa Sigma Fraternity House — Champaign, Champaign County, Illinois
→2002Karcher Hotel — Waukegan, Lake County, Illinois
→1973Kehilath Anshe Ma'ariv Synagogue — Chicago, Cook County, Illinois
→1986Keithsburg Historic District — Keithsburg, Mercer County, Illinois
→1978Kellogg's Grove — Kent, Stephenson County, Illinois
→1998Kendall County Courthouse — Yorkville, Kendall County, Illinois
→1979Kenilworth Club — Kenilworth, Cook County, Illinois
→1973Kennicott's Grove ★ NHL — Glenview, Cook County, Illinois
→1977Kent, Sydney, House — Chicago, Cook County, Illinois
→1991Kenwood Evangelical Church — Chicago, Cook County, Illinois
→2006Kewanee Hotel — Kewanee, Henry County, Illinois
→2006Kewanee Public Library — Kewanee, Henry County, Illinois
→1994Keys, Alvin S., House — Springfield, Sangamon County, Illinois
→1980Keystone Building — Aurora, Kane County, Illinois
→2013Kickapoo Building — Peoria, Peoria County, Illinois
→1971Kimball, William W., House — Chicago, Cook County, Illinois
→2001King, Moses, Brick and Tile Works — Colchester, McDonough County, Illinois
→1983King, Patrick J., House — Chicago, Cook County, Illinois
→1980Kirk, Col. Edward N., House — Sterling, Whiteside County, Illinois
→1992Kitchell Park — Pana, Christian County, Illinois
→1982Kleinkopf, Clarence, Round Barn — Colchester, McDonough County, Illinois
→1976Knox College Alumni Hall — Galesburg, Knox County, Illinois
→1992Knox County Courthouse and Hall of Records — Knoxville, Knox County, Illinois
→1992Knox County Jail — Knoxville, Knox County, Illinois
→1992Knuessl Building — Ottawa, La Salle County, Illinois
→2004Koerner, Gustave, House — Belleville, St. Clair County, Illinois
→2013Kosciuszko Park Field House — Chicago, Cook County, Illinois
→1972Koster Site — Eldred, Greene County, Illinois
→2006Krause Music Store — Chicago, Cook County, Illinois
→2017Kuppenheimer, Louis B., Jr., House — Winnetka, Cook County, Illinois
→2004La Grange Lock and Dam Historic District — Versailles, Brown County, Illinois
→1979La Grange Village Historic District — La Grange, Cook County, Illinois
→1991LaHarpe City Hall — LaHarpe, Hancock County, Illinois
→1987LaHarpe Historic District — LaHarpe, Hancock County, Illinois
→2006Lake Bluff Uptown Commercial Historic District — Lake Bluff, Lake County, Illinois
→2001Lake Forest Cemetery — Lake Forest, Lake County, Illinois
→1978Lake Forest Historic District — Lake Forest, Lake County, Illinois
→1984Lake Shore Apartments — Evanston, Cook County, Illinois
→1980Lake-Peterson House — Rockford, Winnebago County, Illinois
→1984Lake-Side Terrace Apartments — Chicago, Cook County, Illinois
→1976Lakeside Press Building — Chicago, Cook County, Illinois
→1977Lakeview Historic District — Chicago, Cook County, Illinois
→1986Lakeview Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→1999Lakewood Balmoral Historic District — Chicago, Cook County, Illinois
→2010Lamoine Hotel — Macomb, McDonough County, Illinois
→1993Lamont, Robert P., House — Lake Forest, Lake County, Illinois
→2005Lampert--Wildflower House — Belvidere, Boone County, Illinois
→1982Lanzl, Haerman, House — Highland Park, Lake County, Illinois
→2023Laramie State Bank Building — Chicago, Cook County, Illinois
→1980Larchmound — Olney, Richland County, Illinois
→2019Larkin Home for Children — Elgin, Kane County, Illinois
→1992Larson, Mads C., House — Maywood, Cook County, Illinois
→1985LaSalle City Building — LaSalle, La Salle County, Illinois
→1996LaSalle Street Auto Row Historic District — Aurora, Kane County, Illinois
→1974Lathrop, Bryan, House — Chicago, Cook County, Illinois
→2012Lathrop, Julia C., Homes — Chicago, Cook County, Illinois
→2012Laurent, Kenneth and Phyllis, House — Rockford, Winnebago County, Illinois
→2010Lawrence County Courthouse — Lawrenceville, Lawrence County, Illinois
→2017Lawson, Victor F., House YMCA — Chicago, Cook County, Illinois
→1994Lazy A Motel — Springfield, Sangamon County, Illinois
→2019Leaning Tower of Niles, The — Niles, Cook County, Illinois
→1978Lebanon Historic District — Lebanon, St. Clair County, Illinois
→1979LeClaire Historic District — Edwardsville, Madison County, Illinois
→1994LeClaire Hotel — Moline, Rock Island County, Illinois
→1986Legler, Henry E., Regional Branch of the Chicago Public Library — Chicago, Cook County, Illinois
→1976Leiter II Building ★ NHL — Chicago, Cook County, Illinois
→1975Lemont Central Grade School — Lemont, Cook County, Illinois
→1986Lemont Methodist Episcopal Church — Lemont, Cook County, Illinois
→1997Lena Water Tower — Lena, Stephenson County, Illinois
→2000Leonard, Clifford Milton, Farm — Lake Forest, Lake County, Illinois
→1996LeRoy Commercial Historic District — LeRoy, McLean County, Illinois
→1999Lesem, S.J., Building — Quincy, Adams County, Illinois
→2003Lewis Round Barn — Mendon, Adams County, Illinois
→1979Lewis, John L., House — Springfield, Sangamon County, Illinois
→1982Lewis, John W., House — Marshall, Clark County, Illinois
→1982Lewis, Lloyd, House — Libertyville, Lake County, Illinois
→2012Liberty Theater — Murphysboro, Jackson County, Illinois
→2008Libertyville High School Brainerd Building — Libertyville, Lake County, Illinois
→2022Libertyville Town Hall — Libertyville, Lake County, Illinois
→1973Library Hall — Carpentersville, Kane County, Illinois
→2000Library--University of Illinois at Urbana-Champaign — Urbana, Champaign County, Illinois
→1982Lichtstern House — Highland Park, Lake County, Illinois
→2019Lilacia Park Historic District — Lombard, Du Page County, Illinois
→1976Lillie, Frank R., House ★ NHL — Chicago, Cook County, Illinois
→2004Lincoln (Statue) — Urbana, Champaign County, Illinois
→2014Lincoln Branch Peoria Public Library — Peoria, Peoria County, Illinois
→1996Lincoln Building — Champaign, Champaign County, Illinois
→1998Lincoln Colored Home — Springfield, Sangamon County, Illinois
→1985Lincoln Courthouse Square Historic District — Lincoln, Logan County, Illinois
→1971Lincoln Home National Historic Site ★ NHL — Springfield, Sangamon County, Illinois
→2006Lincoln Park Lily Pool ★ NHL — Chicago, Cook County, Illinois
→1986Lincoln Park, South Pond Refectory — Chicago, Cook County, Illinois
→1980Lincoln Public Library — Lincoln, Logan County, Illinois
→2020Lincoln School — Rock Island, Rock Island County, Illinois
→1966Lincoln Tomb ★ NHL — Springfield, Sangamon County, Illinois
→1992Lincoln, Abraham, Memorial Garden — Springfield, Sangamon County, Illinois
→1972Lincoln's New Salem Village — Petersburg, Menard County, Illinois
→1975Lind, Jenny, Chapel — Andover, Henry County, Illinois
→2008Lindemann and Hoverson Company Showroom and Warehouse — Chicago, Cook County, Illinois
→1984Linden Avenue Terminal — Wilmette, Cook County, Illinois
→1983Linden Park Place-Belle Avenue Historic District — Highland Park, Lake County, Illinois
→1971Lindsay, Vachel, House ★ NHL — Springfield, Sangamon County, Illinois
→2005Linn, Howard and Lucy, House — Lake Bluff, Lake County, Illinois
→1995Litchfield Elks Lodge No. 654 — Litchfield, Montgomery County, Illinois
→1999Litchfield Public Library — Litchfield, Montgomery County, Illinois
→1973Little Brick House — Vandalia, Fayette County, Illinois
→1986Livingston County Courthouse — Pontiac, Livingston County, Illinois
→1966Lloyd, Henry Demarest, House ★ NHL — Winnetka, Cook County, Illinois
→2004Lock and Dam No. 13 Historic District — Fulton, Whiteside County, Illinois
→2004Lock and Dam No. 15 Historic District — Rock Island, Rock Island County, Illinois
→2004Lock and Dam No. 17 Historic District — New Boston, Mercer County, Illinois
→2004Lock and Dam No. 18 Historic District — Gladstone, Henderson County, Illinois
→2004Lock and Dam No. 21 Historic District — Quincy, Adams County, Illinois
→1975Lockport Historic District — Lockport, Will County, Illinois
→2004Lockport Lock, Dam and Power House Historic District — Lockport, Will County, Illinois
→1983Loeb, Ernest, House — Highland Park, Lake County, Illinois
→1985Logan Square Boulevards Historic District — Chicago, Cook County, Illinois
→1980London Mills Bridge — London Mills, Fulton County, Illinois
→2004Lone Tree School — Tiskilwa, Bureau County, Illinois
→1998Loop Retail Historic District — Chicago, Cook County, Illinois
→2006Lou Mitchell's Restaurant — Chicago, Cook County, Illinois
→1984Loucks, Charles N., House — Chicago, Cook County, Illinois
→1985Louisville and Nashville Depot — Nashville, Washington County, Illinois
→1973Lovejoy, Owen, Homestead ★ NHL — Princeton, Bureau County, Illinois
→2006Lowell Park — Dixon, Lee County, Illinois
→1980Ludington Building — Chicago, Cook County, Illinois
→2007Lumber Exchange Building and Tower Addition — Chicago, Cook County, Illinois
→2008Lundberg, Charles, House — Rockford, Winnebago County, Illinois
→1992Lynch, Timothy J., House — Maywood, Cook County, Illinois
→2003Lyndon Bridge — Lyndon, Whiteside County, Illinois
→1978Lyons Township Hall — La Grange, Cook County, Illinois
→1978Macktown Historic District — Rockton, Winnebago County, Illinois
→2013Macomb Courthouse Square historic District — Macomb, McDonough County, Illinois
→2020Madison County Sheriff's House and Jail — Edwardsville, Madison County, Illinois
→1980Madison Theatre — Peoria, Peoria County, Illinois
→1970Madlener, Albert F., House — Chicago, Cook County, Illinois
→1978Maeystown Historic District — Maeystown, Monroe County, Illinois
→2003Magill House — Clinton, De Witt County, Illinois
→1969Magnolia Manor — Cairo, Alexander County, Illinois
→1979Maher, George W., House — Kenilworth, Cook County, Illinois
→1984Maid-Rite Sandwich Shop — Springfield, Sangamon County, Illinois
→1982Main Street Historic District — Tampico, Whiteside County, Illinois
→1985Majestic Theatre — East St. Louis, St. Clair County, Illinois
→1983Malden Towers — Chicago, Cook County, Illinois
→1995Malvern Roller Mill — Morrison, Whiteside County, Illinois
→1993Mandel Brothers Warehouse Building — Chicago, Cook County, Illinois
→2009Mandel, Mr. Fred L., Jr., House — Highland Park, Lake County, Illinois
→1976Manhattan Building — Chicago, Cook County, Illinois
→1982Manly-McCann House — Marshall, Clark County, Illinois
→1987Manor House — Chicago, Cook County, Illinois
→2003Manske--Niemann Farm — Litchfield, Montgomery County, Illinois
→1982Maple Avenue Maple Lane Historic District — Highland Park, Lake County, Illinois
→1984Maple Court Apartments — Evanston, Cook County, Illinois
→1980Marine Chapter House — Marine, Madison County, Illinois
→2013Marion Veterans Administration Hospital Historic District — Marion, Williamson County, Illinois
→1994Marissa Academy — Marissa, St. Clair County, Illinois
→2017Mark Twain Hotel — Chicago, Cook County, Illinois
→1983Mark, Caroline, House — Mount Carroll, Carroll County, Illinois
→1969Market Square ★ NHL — Chicago, Cook County, Illinois
→2017Marquette Apartments — Peoria, Peoria County, Illinois
→1973Marquette Building ★ NHL — Chicago, Cook County, Illinois
→1989Marseilles Hydro Plant — Marseilles, La Salle County, Illinois
→2004Marseilles Lock and Dam Historic District — Marseilles, La Salle County, Illinois
→1978Marsh, William W., House — Sycamore, De Kalb County, Illinois
→2013Marshall Business Historic District — Marshall, Clark County, Illinois
→1988Marshall Field and Company Store — Oak Park, Cook County, Illinois
→1978Marshall Field Company Store ★ NHL — Chicago, Cook County, Illinois
→2017Marshall Hotel — Chicago, Cook County, Illinois
→2014Martin House — Fulton, Whiteside County, Illinois
→1990Martin, Pierre, House — North Dupo, St. Clair County, Illinois
→1980Martin, Sarah, House — Monmouth, Warren County, Illinois
→2022Mary A. Todd School — Aurora, Kane County, Illinois
→1974Mary's River Covered Bridge — Chester, Randolph County, Illinois
→2006Marywood Academy — Evanston, Cook County, Illinois
→1994Mason, Paris, Building — Grafton, Jersey County, Illinois
→1982Masonic Temple — Aurora, Kane County, Illinois
→1982Masonic Temple Building — Oak Park, Cook County, Illinois
→1992Masonic Temple Building — Maywood, Cook County, Illinois
→2004Massie Variety Store — New Canton, Pike County, Illinois
→1996Mattfeldt, Theodore H. O., House — Mt. Pulaski, Logan County, Illinois
→2010Mattis, George and Elsie, House — Champaign, Champaign County, Illinois
→2006Maverick Lloyd, Lola, House — Winnetka, Cook County, Illinois
→2002Maxwell--Briscoe Automobile Company Showroom — Chicago, Cook County, Illinois
→1986Mayfair Apartments — Chicago, Cook County, Illinois
→2004Maynard, Isaac N., Rowhouses — Chicago, Cook County, Illinois
→1992Maywood Fire Department Building — Maywood, Cook County, Illinois
→1997Mazon Creek Fossil Beds ★ NHL — Morris, Grundy County, Illinois
→1982McAuley School District No. 27 — West Chicago, Du Page County, Illinois
→1994McClintock, John and Amelia, House — Grafton, Jersey County, Illinois
→1996McClure, Thomas J. and Caroline, House — McClure, Alexander County, Illinois
→1970McClurg Building — Chicago, Cook County, Illinois
→1996McCormick, Charles Emmor, House — Vermont, Fulton County, Illinois
→1972McDonough County Courthouse — Macomb, McDonough County, Illinois
→1991McFarland House — Charleston, Coles County, Illinois
→2006McGovney--Yunker Farmstead — Mokena, Will County, Illinois
→1996McGrath, John, House — Polo, Ogle County, Illinois
→2006McJunkin, William, House — Winnetka, Cook County, Illinois
→1973McLean County Courthouse and Square — Bloomington, McLean County, Illinois
→1988McWorter, Free Frank, Grave Site — Barry, Pike County, Illinois
→2006Meekerville Historic District — Chicago, Cook County, Illinois
→1976Meetinghouse of the Central Congregational Church — Galesburg, Knox County, Illinois
→1984Melwood Apartments — Evanston, Cook County, Illinois
→2023Memorial Bandstand of Long Point — Long Point, Livingston County, Illinois
→1993Memorial Hall — Richmond, McHenry County, Illinois
→1980Memorial Washington Reformed Presbyterian Church — Elgin, Kane County, Illinois
→1970Menard, Pierre, House ★ NHL — Ellis Grove, Randolph County, Illinois
→1982Mercer County Courthouse — Aledo, Mercer County, Illinois
→1997Mercer County Fairgrounds — Aledo, Mercer County, Illinois
→1997Mercer County Jail — Aledo, Mercer County, Illinois
→1975Mermaid House Hotel — Lebanon, St. Clair County, Illinois
→1996Mershon, Joab, House — Vermont, Fulton County, Illinois
→1986Metal Shop — Urbana, Champaign County, Illinois
→1978Metamora Courthouse — Metamora, Woodford County, Illinois
→2018Methodist Episcopal Church — Salem, Marion County, Illinois
→2001Meyer, Pearl and Bess, House — Flora, Clay County, Illinois
→1984Michigan-Lee Apartments — Evanston, Cook County, Illinois
→1978Michigan-Wacker Historic District — Chicago, Cook County, Illinois
→2023Mid-City Trust and Savings Bank — Chicago, Cook County, Illinois
→2017Middletown Historic District — Alton, Madison County, Illinois
→1982Middletown Historic District (Boundary Increase) — Alton, Madison County, Illinois
→1984Midwest Athletic Club — Chicago, Cook County, Illinois
→1986Military Drill Hall and Men's Gymnasium — Urbana, Champaign County, Illinois
→1979Milk, Lemuel, Carriage House — Kankakee, Kankakee County, Illinois
→1982Millard, George Madison, House — Highland Park, Lake County, Illinois
→1982Millard, Sylvester, House — Highland Park, Lake County, Illinois
→1979Millburn Historic District — Millburn, Lake County, Illinois
→1979Miller-Davis Law Buildings — Bloomington, McLean County, Illinois
→1991Miller, Allan, House — Chicago, Cook County, Illinois
→1995Miller, Bell, Apartments — Spingfield, Sangamon County, Illinois
→1978Miller, George H., House — Bloomington, McLean County, Illinois
→2010Miller, Henry W., House — Galena, Jo Daviess County, Illinois
→1980Miller, Joseph, House — Rochester, Sangamon County, Illinois
→1976Millikan, Robert A., House ★ NHL — Chicago, Cook County, Illinois
→1974Millikin, James, House — Decatur, Macon County, Illinois
→2003Millville Town Site — Apple River, Jo Daviess County, Illinois
→1992Millward, Caroline, House — Maywood, Cook County, Illinois
→1979Milne, Robert, House — Lockport, Will County, Illinois
→1979Mineola Hotel — Fox Lake, Lake County, Illinois
→1985Miners Institute Building — Collinsville, Madison County, Illinois
→1987Moats, William, Farm — Ashton, Ogle County, Illinois
→1984Mobile and Ohio Railroad Depot — Murphysboro, Jackson County, Illinois
→2007Moline Downtown Commercial Historic District — Moline, Rock Island County, Illinois
→1970Monadnock Block — Chicago, Cook County, Illinois
→2006Monmouth Courthouse Commercial Historic District — Monmouth, Warren County, Illinois
→1994Montgomery County Courthouse — Hillsboro, Montgomery County, Illinois
→1978Montgomery Ward Company Complex ★ NHL — Chicago, Cook County, Illinois
→2004Montgomery, John Rogerson, House — Glencoe, Cook County, Illinois
→2009Monticello Courthouse Square Historic District — Monticello, Piatt County, Illinois
→1979Moore, C. H., House — Clinton, De Witt County, Illinois
→1986Morgan County Courthouse — Jacksonville, Morgan County, Illinois
→1977Morgan-Wells House — Quincy, Adams County, Illinois
→2006Morris Downtown Commercial Historic District — Morris, Grundy County, Illinois
→2000Morris Wide Water Canal Boat Site — Morris, Grundy County, Illinois
→1968Morrow Plots, University of Illinois ★ NHL — Urbana, Champaign County, Illinois
→2000Morse, Robert Hosmer, House — Lake Forest, Lake County, Illinois
→1996Morton, Asher, Farmstead — Paris, Edgar County, Illinois
→1983Morton, J. Sterling, High School East Auditorium — Cicero, Cook County, Illinois
→2008Moss, Henry Clay, House — Paris, Edgar County, Illinois
→2017Motley, John Lothrop, School — Chicago, Cook County, Illinois
→2002Motor Row Historic District — Chicago, Cook County, Illinois
→1995Moultrie County Courthouse — Sullivan, Moultrie County, Illinois
→2019Mound City Civil War Naval Hospital — Mound City, Pulaski County, Illinois
→1997Mound City National Cemetery — Mound City, Pulaski County, Illinois
→1980Mount Carroll Historic District — Mount Carroll, Carroll County, Illinois
→1980Mount Lookout — Alton, Madison County, Illinois
→1978Mount Pulaski Courthouse — Mount Pulaski, Logan County, Illinois
→1987Mount Sterling Commercial Historic District — Mount Sterling, Brown County, Illinois
→2016Muirhead, Robert and Elizabeth, House — Plato Center, Kane County, Illinois
→1979Muller House — Arlington Heights, Cook County, Illinois
→1980Mundelein College Skyscraper Building — Chicago, Cook County, Illinois
→1985Municipal Courts Building — Chicago, Cook County, Illinois
→2017Municipal Pier — Chicago, Cook County, Illinois
→2005Murphysboro Elks Lodge — Murphysboro, Jackson County, Illinois
→1972Museum of Science and Industry — Chicago, Cook County, Illinois
→2002Music Pavilion — Orion, Henry County, Illinois
→1983Nachusa House — Dixon, Lee County, Illinois
→1977Naperville Historic District — Naperville, Du Page County, Illinois
→2002Narodni Sin — Edwardsville, Madison County, Illinois
→2005Narragansett, The — Chicago, Cook County, Illinois
→1986Natural History Building — Urbana, Champaign County, Illinois
→1966Nauvoo Historic District ★ NHL — Nauvoo, Hancock County, Illinois
→1978Near North Historic District — Waukegan, Lake County, Illinois
→2013Neuville, The — Chicago, Cook County, Illinois
→1978New Masonic Building and Oriental Theater — Chicago, Cook County, Illinois
→1991New Orpheum Theatre — Champaign, Champaign County, Illinois
→1982New Piasa Chautauqua Historic District — Chautauqua, Jersey County, Illinois
→1982Newcomb, Richard F., House — Quincy, Adams County, Illinois
→1992Nichols, Harry H., House — Maywood, Cook County, Illinois
→1976Nickerson, Samuel, House — Chicago, Cook County, Illinois
→1984Nisbet Homestead Farm — Earlville, De Kalb County, Illinois
→2000Noble--Seymour--Crippen House — Chicago, Cook County, Illinois
→1997Normal Theater — Normal, McLean County, Illinois
→2015North Eighth Street Plaza — Pekin, Tazewell County, Illinois
→1982North Geneva Historic District — Geneva, Kane County, Illinois
→2012North Grove School — Sycamore, De Kalb County, Illinois
→2006North Mayfair Bungalow Historic District — Chicago, Cook County, Illinois
→1979North Sangamon United Presbyterian Church — Athens, Menard County, Illinois
→1983North Shore Sanitary District Tower — Highland Park, Lake County, Illinois
→1998North State Street Historic District — Monticello, Piatt County, Illinois
→1984North Wells Street Historic District — Chicago, Cook County, Illinois
→1999Northeast Evanston Historic District — Evanston, Cook County, Illinois
→1989Northwestern Terra Cotta Company Building — Chicago, Cook County, Illinois
→2002Norwood Park Historical District — Chicago, Cook County, Illinois
→1979Notre Dame de Chicago — Chicago, Cook County, Illinois
→1996O'Connell, Daniel, House — Vermont, Fulton County, Illinois
→1993O'Conor, Andrew J., III, House — Ottawa, La Salle County, Illinois
→2008O'Grady, Mr. J. William de Coursey, House — Kenilworth, Cook County, Illinois
→2001Oak Circle Historic District — Wilmette, Cook County, Illinois
→1995Oak Hill Cemetery — Lewistown, Fulton County, Illinois
→2020Oak Lawn School — Oak Lawn, Cook County, Illinois
→2005Oak Park Conservatory — Oak Park, Cook County, Illinois
→2014Oak Park Village Hall — Oak Park, Cook County, Illinois
→1984Oak Ridge Apartments — Evanston, Cook County, Illinois
→1995Oak Ridge Cemetery — Springfield, Sangamon County, Illinois
→1979Oaklawn Farm — Wayne, Kane County, Illinois
→1984Oakton Gables — Evanston, Cook County, Illinois
→2005Oakton Historic District — Evanston, Cook County, Illinois
→2020Obee House — Highland Park, Lake County, Illinois
→1979Octagon House — Barrington, Cook County, Illinois
→1996Odd Fellows Opera Block — Ellisville, Fulton County, Illinois
→1996Odell Building — Morrison, Whiteside County, Illinois
→1972Ogden-Fettie Site — Lewistown, Fulton County, Illinois
→1981Ogle County Courthouse — Oregon, Ogle County, Illinois
→1972Old Cahokia Courthouse — Cahokia, St. Clair County, Illinois
→1978Old Chicago Historical Society Building — Chicago, Cook County, Illinois
→1976Old Colony Buildings — Chicago, Cook County, Illinois
→1973Old Customhouse — Cairo, Alexander County, Illinois
→1973Old Danish Church — Sheffield, Bureau County, Illinois
→2018Old Fire Station — Chester, Randolph County, Illinois
→1975Old Iroquois County Courthouse — Watseka, Iroquois County, Illinois
→1981Old Main — Charleston, Coles County, Illinois
→1982Old Main Building — Chicago, Cook County, Illinois
→1975Old Main, Almira College — Greenville, Bond County, Illinois
→1975Old Main, Augustana College — Rock Island, Rock Island County, Illinois
→1966Old Main, Knox College ★ NHL — Galesburg, Knox County, Illinois
→1973Old Market House — Galena, Jo Daviess County, Illinois
→1974Old McHenry County Courthouse — Woodstock, McHenry County, Illinois
→1984Old Morrison Mill — Burnt Prairie, White County, Illinois
→1979Old Second National Bank — Aurora, Kane County, Illinois
→1966Old State Capitol ★ NHL — Springfield, Sangamon County, Illinois
→1978Old Stone Arch Bridge — Clark Center, Clark County, Illinois
→1975Old Stone Arch, National Road — Marshall, Clark County, Illinois
→1972Old Stone Gate of Chicago Union Stockyards ★ NHL — Chicago, Cook County, Illinois
→1975Old Stone Hotel — Warren, Jo Daviess County, Illinois
→1984Old Town Triangle Historic District — Chicago, Cook County, Illinois
→1983Oliver Building — Chicago, Cook County, Illinois
→1989Olmstead Depot — Olmsted, Pulaski County, Illinois
→2002Olney Carnegie Library — Olney, Richland County, Illinois
→2001Olympia Fields Country Club — Olymbia Fields, Cook County, Illinois
→1999One LaSalle Street Building — Chicago, Cook County, Illinois
→1984One Thirty North Eighth Building — Quincy, Adams County, Illinois
→1975Oquawka Wagon Bridge — Oquawka, Henderson County, Illinois
→1978Orchestra Hall ★ NHL — Chicago, Cook County, Illinois
→2006Oregon Commercial Historic District — Oregon, Ogle County, Illinois
→2003Oregon Public Library — Oregon, Ogle County, Illinois
→1971Orendorff, Ulysses G., House — Canton, Fulton County, Illinois
→1978Original Springs Hotel and Bathhouse — Okawville, Washington County, Illinois
→1976Orth House — Winnetka, Cook County, Illinois
→2008Otis Elevator Company Factory Building — Chicago, Cook County, Illinois
→2011Ottawa Commercial Historic District — Ottawa, La Salle County, Illinois
→2013Ottawa East Side Historic District — Ottawa, La Salle County, Illinois
→1984Otte, Dennis, Round Barn — Eleroy, Stephenson County, Illinois
→1980Oughton, John R., House — Dwight, Livingston County, Illinois
→2005Ouilmette North Historic District — Wilmette, Cook County, Illinois
→1986Overton Hygienic Building — Chicago, Cook County, Illinois
→2016Overton, Anthony, Elementary School — Chicago, Cook County, Illinois
→2005Pacesetter Gardens Historic District — Riverdale, Cook County, Illinois
→2021Paddock, Colonel George H., House — Princeton, Bureau County, Illinois
→2001Paddock, Henry I., House — Winthrop Harbor, Lake County, Illinois
→1975Page Brothers Building — Chicago, Cook County, Illinois
→1996Page, Henry H., House — Vermont, Fulton County, Illinois
→1985Paine House — Xenia, Clay County, Illinois
→1995Palestine Commercial Historic District — Palestine, Crawford County, Illinois
→2007Palmer Park — Chicago, Cook County, Illinois
→1985Palmer, Col. Gustavius A., House — Crystal Lake, McHenry County, Illinois
→1999Palmer, Hiram, House — Farmington, Fulton County, Illinois
→2003Palmolive Building — Chicago, Cook County, Illinois
→1980Paramount Theatre — Aurora, Kane County, Illinois
→2002Paris Carnegie Public Library — Paris, Edgar County, Illinois
→1987Paris Elks Lodge No. 812 Building — Paris, Edgar County, Illinois
→2019Paris High School and Gymnasium — Paris, Edgar County, Illinois
→2011Parkway Garden Homes — Chicago, Cook County, Illinois
→1994Parlin Library — Canton, Fulton County, Illinois
→2013Passionist Fathers Monastery — Chicago, Cook County, Illinois
→2006Patten, Charles H., House — Palatine, Cook County, Illinois
→1980Pattington Apartments — Chicago, Cook County, Illinois
→1990Patton Block Building — Monmouth, Warren County, Illinois
→1986Patton, John, Log Cabin — Lexington, McLean County, Illinois
→2002Paxton Carnegie Public Library — Paxton, Ford County, Illinois
→1980Paxton First Schoolhouse — Paxton, Ford County, Illinois
→1984Paxton Water Tower and Pump House — Paxton, Ford County, Illinois
→2017Peabody, Elizabeth, School — Chicago, Cook County, Illinois
→1994Peabody, Francis Stuyvesant, Estate — Oak Brook, Du Page County, Illinois
→2000Peabody, Francis Stuyvesant, House — Hinsdale, Du Page County, Illinois
→1994Peace and Harvest — Peoria, Peoria County, Illinois
→2011Peacock Brewery — Rockford, Winnebago County, Illinois
→2015Peck and Hills Furniture Company Warehouse — Chicago, Cook County, Illinois
→2020Peeples, Robert and John McKee, Houses — Old Shawneetown, Gallatin County, Illinois
→1980Pekin Federal Building — Pekin, Tazewell County, Illinois
→1982Pelton, Ora, House — Elgin, Kane County, Illinois
→1982Pemberton Hall and Gymnasium — Charleston, Coles County, Illinois
→1979Pennsylvania Avenue Historic District — East St. Louis, St. Clair County, Illinois
→2003Pentecost, John L., House — Elmhurst, Du Page County, Illinois
→2004People's State Bank — Orangeville, Stephenson County, Illinois
→1984Peoples Gas Building — Chicago, Cook County, Illinois
→1999Peoples National Bank Building--Fries Building — Rock Island, Rock Island County, Illinois
→1995Peoria Automobile Club — Chillicothe, Peoria County, Illinois
→1973Peoria City Hall — Peoria, Peoria County, Illinois
→2004Peoria Lock and Dam Historic District — Creve Coeur, Tazewell County, Illinois
→1982Peoria Mineral Springs — Peoria, Peoria County, Illinois
→1982Peoria State Hospital — Bartonville, Peoria County, Illinois
→1980Peoria Waterworks — Peoria, Peoria County, Illinois
→1983Peoria Women's Club — Peoria, Peoria County, Illinois
→1982Peotone Mill — Peotone, Will County, Illinois
→1982Pere Marquette Hotel — Peoria, Peoria County, Illinois
→1985Pere Marquette State Park Lodge and Cabins — Grafton, Jersey County, Illinois
→1985Perkins, Dwight, House — Evanston, Cook County, Illinois
→2000Perry County Jail — Pinckneyville, Perry County, Illinois
→2022Perry, Joseph Ferris, House — Crete, Will County, Illinois
→1976Petersburg Historic District — Petersburg, Menard County, Illinois
→1986Petersburg Historic District (Boundary Increase) — Petersburg, Menard County, Illinois
→1977Peterstown House — Waterloo, Monroe County, Illinois
→1976Pettingill-Morron House — Peoria, Peoria County, Illinois
→1978Pettit Memorial Chapel — Belvidere, Boone County, Illinois
→1982Phelps, Alexis, House — Oquawka, Henderson County, Illinois
→2004Phi Delta Theta Fraternity House — Champaign, Champaign County, Illinois
→1990Phi Mu Sorority House — Urbana, Champaign County, Illinois
→1999Phillips, Alfred, House — Gibson City, Ford County, Illinois
→1985Phoenix Opera House Block — Rushville, Schuyler County, Illinois
→1982Pick, George, House — Highland Park, Lake County, Illinois
→1975Pickwick Theater Building — Park Ridge, Cook County, Illinois
→1999Pike--Sheldon House — Monmouth, Warren County, Illinois
→2006Pilsen Historic District — Chicago, Cook County, Illinois
→1975Pine Craig — Naperville, Du Page County, Illinois
→1984Pine Grove Community Club — Paris, Edgar County, Illinois
→1978Pinehill — Oregon, Ogle County, Illinois
→1983Pioneer Gothic Church — Dwight, Livingston County, Illinois
→2023Pioneer Trust and Savings Bank — Chicago, Cook County, Illinois
→2001Pioneers, The — Elmwood, Peoria County, Illinois
→1971Pittsfield East School — Pittsfield, Pike County, Illinois
→1980Pittsfield Historic District — Pittsfield, Pike County, Illinois
→2021Plainfield Halfway House — Plainfield, Will County, Illinois
→1993Plano Hotel — Plano, Kendall County, Illinois
→1994Pleasant Grove School — Eden, Peoria County, Illinois
→1972Pleasant Home ★ NHL — Oak Park, Cook County, Illinois
→1986Poinsetta Apartments — Chicago, Cook County, Illinois
→1992Point School — Grant Park, Kankakee County, Illinois
→2014Polish National Alliance Headquarters — Chicago, Cook County, Illinois
→2013Polish Roman Catholic Union of America — Chicago, Cook County, Illinois
→2004Polo Independent Order of Odd Fellows Lodge No. 197 — Polo, Ogle County, Illinois
→1976Pontiac Building — Chicago, Cook County, Illinois
→1990Pontiac City Hall and Fire Station — Pontiac, Livingston County, Illinois
→1995Portage Park — Chicago, Cook County, Illinois
→1980Post House — Alton, Madison County, Illinois
→2017Potter and Barker Grain Elevator — La Fox, Kane County, Illinois
→1989Potter House — Rock Island, Rock Island County, Illinois
→1989Power Farmstead — Cantrall, Sangamon County, Illinois
→1972Prairie Avenue District — Chicago, Cook County, Illinois
→2005Prairie Dell Meetinghouse — Iroquois, Iroquois County, Illinois
→1991Price--Prather House — Williamsville, Sangamon County, Illinois
→1985Price/Wheeler House — Springfield, Sangamon County, Illinois
→1980Princeton Chapter House — Princeton, Bureau County, Illinois
→1993Principia College Historic District ★ NHL — Elsah, Jersey County, Illinois
→1998Proctor Building — Libertyville, Lake County, Illinois
→1979Proctor, John C., Recreation Center — Peoria, Peoria County, Illinois
→2003Produce Terminal Cold Storage Company Building — Chicago, Cook County, Illinois
→1996Promontory Apartments — Chicago, Cook County, Illinois
→1983Public Service Building — Libertyville, Lake County, Illinois
→1981Pulaski Park and Fieldhouse — Chicago, Cook County, Illinois
→1979Pulsifer, Edward, House — Hennepin, Putnam County, Illinois
→2013Pure Oil Station — Geneva, Kane County, Illinois
→2005Purple, George E., House — LaGrange, Cook County, Illinois
→1975Putnam County Courthouse — Hennepin, Putnam County, Illinois
→2021Pyle-National Company Plant — Chicago, Cook County, Illinois
→1996Quigley Preparatory Seminary — Chicago, Cook County, Illinois
→1980Quinby, Ivory, House — Monmouth, Warren County, Illinois
→1985Quincy East End Historic District — Quincy, Adams County, Illinois
→2011Quincy National Cemetery — Quincy, Adams County, Illinois
→2000Quincy Northwest Historic District — Quincy, Adams County, Illinois
→2005Quinlan Hall — Chicago, Cook County, Illinois
→1979Quinn Chapel of the A.M.E. Church — Chicago, Cook County, Illinois
→1982Railway Exchange Building — Chicago, Cook County, Illinois
→2020Railway Express Agency Building — Mattoon, Coles County, Illinois
→1987Rainey, Henry T., Farm — Carrollton, Greene County, Illinois
→2021Ramova Theater — Chicago, Cook County, Illinois
→2009Ramsey, Charles N., and Herry E. Weese House — Kenilworth, Cook County, Illinois
→1994Randecker's Hardware Store — Bloomingdale, Du Page County, Illinois
→1990Ransom Water Tower — Ransom, La Salle County, Illinois
→1973Ratcliff Inn — Carmi, White County, Illinois
→2008Ravenswood Manor Historic District — Chicago, Cook County, Illinois
→1982Ravinia Park Historic District — Highland Park, Lake County, Illinois
→1999Raymond M. Hilliard Center Historic District — Chicago, Cook County, Illinois
→2002Raymond Park Apartments — Evanston, Cook County, Illinois
→1982Reagan's, Ronald, Boyhood Home — Dixon, Lee County, Illinois
→1979Red Bud Historic District — Red Bud, Randolph County, Illinois
→1975Red Covered Bridge — Princeton, Bureau County, Illinois
→1979Reebie Moving and Storage Company — Chicago, Cook County, Illinois
→2001Reed, Mrs. Kersey Coates, House — Lake Forest, Lake County, Illinois
→1985Reef House — Carbondale, Jackson County, Illinois
→2007Rees, Harriet F., House — Chicago, Cook County, Illinois
→2008Rehnstrom, August and Margaretha, House — Andover, Henry County, Illinois
→2003Reid House — Chicago, Cook County, Illinois
→1975Reid Murdoch Building — Chicago, Cook County, Illinois
→1987Reimbold, William J., House — Nauvoo, Hancock County, Illinois
→1970Reliance Building ★ NHL — Chicago, Cook County, Illinois
→1990Reorganized Church of Jesus Christ of Latter Day Saints — Plano, Kendall County, Illinois
→2000Ricker, Nathan C., House — Urbana, Champaign County, Illinois
→1984Ridge Boulevard Apartments — Evanston, Cook County, Illinois
→1984Ridge Grove — Evanston, Cook County, Illinois
→1976Ridge Historic District — Chicago, Cook County, Illinois
→1984Ridge Manor — Evanston, Cook County, Illinois
→1983Ridgeland-Oak Park Historic District — Oak Park, Cook County, Illinois
→1978Ridgewood — Evanston, Cook County, Illinois
→1995Riis, Jacob A., Park — Chicago, Cook County, Illinois
→1992Rippon--Kinsella House — Springfield, Sangamon County, Illinois
→2000Ritzman, William, House — Orangeville, Stephenson County, Illinois
→1977River Forest Historic District — River Forest, Cook County, Illinois
→2003Riverbank Laboratories — Geneva, Kane County, Illinois
→2012Riverside Park Bandshell — Murphysboro, Jackson County, Illinois
→1969Riverside Water Tower ★ NHL — Riverside, Cook County, Illinois
→1986Riverview Historic District — Kankakee, Kankakee County, Illinois
→2008Robbins Park Historic District — Hinsdale, Du Page County, Illinois
→1979Roberts, William H., House — Pecatonica, Winnebago County, Illinois
→2014Robertson, John, Jr., House — Barrington, Cook County, Illinois
→1966Robie, Frederick C., House ★ NHL — Chicago, Cook County, Illinois
→2020Robinson High School Auditorium--Gymnasium — Robinson, Crawford County, Illinois
→1992Robinson House — Maywood, Cook County, Illinois
→1990Robinson--Bonnett Inn — Bobtown, Menard County, Illinois
→1973Robinson-Stewart House — Carmi, White County, Illinois
→1980Robinson, J. L., General Store — Hagaman, Macoupin County, Illinois
→2004Robinwood — Elmhurst, Du Page County, Illinois
→2000Roche, Martin--John Tait House — Chicago, Cook County, Illinois
→1969Rock Island Arsenal ★ NHL — Rock Island, Rock Island County, Illinois
→1978Rock Island Depot and Freight House — Peoria, Peoria County, Illinois
→1982Rock Island Lines Passenger Station — Rock Island, Rock Island County, Illinois
→1997Rock Island National Cemetery — Moline, Rock Island County, Illinois
→2022Rockford Brass Works — Rockford, Winnebago County, Illinois
→2005Rockford Elk's Lodge #64 — Rockford, Winnebago County, Illinois
→1999Rockford Morning Star Building — Rockford, Winnebago County, Illinois
→2021Rockford Woman’s Club — Rockford, Winnebago County, Illinois
→1978Rockton Historic District — Rockton, Winnebago County, Illinois
→2005Rogers Park Manor Bungalow Historic District — Chicago, Cook County, Illinois
→2005Rogers, Col. Matthew, Building — Athens, Menard County, Illinois
→1979Rogers, Orson, House — Marengo, McHenry County, Illinois
→1979Rohrbough, Calendar, House — Kinmundy, Marion County, Illinois
→2019Rollo Congregational United Church of Christ — Earlville, De Kalb County, Illinois
→1977Roloson, Robert, Houses — Chicago, Cook County, Illinois
→1970Rookery Building ★ NHL — Chicago, Cook County, Illinois
→1984Rookwood Apartments — Evanston, Cook County, Illinois
→1967Room 405, George Herbert Jones Laboratory, The University of Chicago ★ NHL — Chicago, Cook County, Illinois
→2002Roosevelt Junior High School — Decatur, Macon County, Illinois
→1985Ropp-Grabill House — Chicago, Cook County, Illinois
→1972Rose Hotel — Elizabethtown, Hardin County, Illinois
→1975Rosehill Cemetery Administration Building and Entry Gate — Chicago, Cook County, Illinois
→1981Rosenwald Apartment Building — Chicago, Cook County, Illinois
→1982Rosewood Park — Highland Park, Lake County, Illinois
→1996Ross, Harvey Lee, House — Vermont, Fulton County, Illinois
→2006Ross, Joseph, House — Rochester, Sangamon County, Illinois
→1989Rothschild, A. M., & Company Store — Chicago, Cook County, Illinois
→2002Route 66 by Carpenter Park — Springfield, Sangamon County, Illinois
→2009Route 66 South of Lake Springfield — Springfield, Sangamon County, Illinois
→2003Route 66, Cayuga to Chenoa — Pontiac, Livingston County, Illinois
→2002Route 66, Girard to Nilwood — Nilwood, Macoupin County, Illinois
→2001Route 66, Litchfield to Mount Olive — Litchfield, Montgomery County, Illinois
→1987Roycemore School — Evanston, Cook County, Illinois
→2022Royer, Joseph W., House and Ella Danely Cottage — Urbana, Champaign County, Illinois
→2011Roytek, Richard, House — Mattoon, Coles County, Illinois
→2011Rozek, Theodore, House — Chicago, Cook County, Illinois
→1978Rubens Rialto Square Theater — Joliet, Will County, Illinois
→1994Ruebel Hotel — Grafton, Jersey County, Illinois
→1982Rutherford, Dr. Hiram, House and Office — Oakland, Coles County, Illinois
→1994Rutter Store — St. Libory, St. Clair County, Illinois
→1974Ryan Round Barn — Kewanee, Henry County, Illinois
→1996Ryerson, Edward L., Area Historic District — Deerfield, Lake County, Illinois
→2001S.R. Crown Hall ★ NHL — Chicago, Cook County, Illinois
→2003Sala Apartment Building — Rock Island, Rock Island County, Illinois
→2013Salem Baptist Church — Alton, Madison County, Illinois
→2001Saline County Poor Farm — Harrisburg, Saline County, Illinois
→1979Sandwich City Hall — Sandwich, De Kalb County, Illinois
→2010Sauganash Historic District — Chicago, Cook County, Illinois
→1990Scales Mound Historic District — Scales Mound, Jo Daviess County, Illinois
→1995Schertz, Joseph, House — Metamora, Woodford County, Illinois
→2008Schiller, Alfred A.,House — Glen Ellyn, Du Page County, Illinois
→2022Schlitz Brewery-Tied House — Chicago, Cook County, Illinois
→1983Schlosser, Frank, Complex — Okawville, Washington County, Illinois
→1978Schoenhofen Brewery Historic District — Chicago, Cook County, Illinois
→2004Schorsch Irving Park Gardens Historic District — Chicago, Cook County, Illinois
→1982Schultz, Raymond, Round Barn — Pontiac, Livingston County, Illinois
→1982Schulze Baking Company Plant — Chicago, Cook County, Illinois
→2011Schurz, Carl, High School — Chicago, Cook County, Illinois
→1987Schweikher, Paul, House and Studio — Schaumburg, Cook County, Illinois
→1994Scott Field Historic District — O'Fallon, St. Clair County, Illinois
→1983Scott-Vrooman House — Bloomington, McLean County, Illinois
→1983Scott, Lyman, House — Summer Hill, Pike County, Illinois
→1983Scott, Matthew T., House — Chenoa, McLean County, Illinois
→2002Scoville Place — Oak Park, Cook County, Illinois
→2003Scutt, Hiram B., Mansion — Joliet, Will County, Illinois
→1987Sears, Albert H., House — Plano, Kendall County, Illinois
→1978Sears, Roebuck and Company Complex ★ NHL — Chicago, Cook County, Illinois
→1974Second Presbyterian Church ★ NHL — Chicago, Cook County, Illinois
→1978Sentinel Building — Centralia, Marion County, Illinois
→1982Sesser Opera House — Sesser, Franklin County, Illinois
→2005Seventh Street Commercial Historic District — Rockford, Winnebago County, Illinois
→1980Seville Bridge — Seville, Fulton County, Illinois
→2021Shabbona Hotel — Shabbona, De Kalb County, Illinois
→1988Shakespeare Garden — Evanston, Cook County, Illinois
→2003Shastid, John, House — Pittsfield, Pike County, Illinois
→2007Shaw--Van Gilder House — Paris, Edgar County, Illinois
→1974Shedd Park Fieldhouse — Chicago, Cook County, Illinois
→1987Shedd, John G., Aquarium ★ NHL — Chicago, Cook County, Illinois
→1976Sheffield Historic District — Chicago, Cook County, Illinois
→1985Sheffield Historic District (Boundary Increase II) — Chicago, Cook County, Illinois
→1986Sheffield Historic District (Boundary Increase III) — Chicago, Cook County, Illinois
→1983Sheffield Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→1976Shelbyville Historic District — Shelbyville, Shelby County, Illinois
→1985Sheridan Park Historic District — Chicago, Cook County, Illinois
→1980Sheridan Plaza Hotel — Chicago, Cook County, Illinois
→1984Sheridan Square Apartments — Evanston, Cook County, Illinois
→1990Sherman Park — Chicago, Cook County, Illinois
→1996Sherrard Banking Company — Sherrard, Mercer County, Illinois
→2005Shiloh College — Shiloh Hill, Randolph County, Illinois
→1977Shiloh House — Zion, Lake County, Illinois
→1986Shoreland Hotel — Chicago, Cook County, Illinois
→2017Shoreline Apartments — Chicago, Cook County, Illinois
→1980Shriver Farmstead — Virden, Macoupin County, Illinois
→1983Shriver House — Flora, Clay County, Illinois
→1990Sigma Alpha Epsilon Fraternity House — Champaign, Champaign County, Illinois
→2007Silhan, Mr. Robert, House — Berwyn, Cook County, Illinois
→1997Silversmith Building — Chicago, Cook County, Illinois
→1983Singer Building — Chicago, Cook County, Illinois
→2001Sixth, Seventh, and Tenth Street Stone Arch Bridges — Charleston, Coles County, Illinois
→1983Skinner, Richard M., House — Princeton, Bureau County, Illinois
→1994Slaten--LaMarsh House — Grafton, Jersey County, Illinois
→2017Sloane, William and Jennette, House — Elmhurst, Du Page County, Illinois
→2004Small--Towle House — Wilmington, Will County, Illinois
→1999Smith--Duncan, House and Eastman Barn — Grafton, Jersey County, Illinois
→1995Smith, A. Herr and E. E., Public Library — Loda, Iroquois County, Illinois
→1980Smith, Ephraim, House — Sugar Grove, Kane County, Illinois
→1985Smith, J. P., Shoe Company Plant — Chicago, Cook County, Illinois
→1996Smith, Tina Weedon, Memorial Hall — Urbana, Champaign County, Illinois
→2003Snite, John Taylor, House — Highland Park, Lake County, Illinois
→1996Snowden, Elsworth, House — Vermont, Fulton County, Illinois
→1992Soffel, Albert, House — Maywood, Cook County, Illinois
→1984Soldier Field ★ NHL — Chicago, Cook County, Illinois
→1985Soldier's Monument — Byron, Ogle County, Illinois
→1976Soldiers and Sailors Memorial Hall — Rockford, Winnebago County, Illinois
→1998Soldiers' Monument — Freeport, Stephenson County, Illinois
→2007Solon, Francis and Abbie, House — Champaign, Champaign County, Illinois
→2000Somerset Hotel — Chicago, Cook County, Illinois
→1982Soule, C. S., House — Highland Park, Lake County, Illinois
→2004Soulsby Service Station — Mount Olive, Macoupin County, Illinois
→2002South Charter Street Historic District — Monticello, Piatt County, Illinois
→1976South Dearborn Street--Printing House Row Historic District ★ NHL — Chicago, Cook County, Illinois
→1994South Fulton Churchhouse — Astoria, Fulton County, Illinois
→1976South Henderson Church and Cemetery — Gladstone, Henderson County, Illinois
→1978South Loop Printing House District — Chicago, Cook County, Illinois
→2004South Park Manor Historic District — Chicago, Cook County, Illinois
→1978South Shore Beach Apartments — Chicago, Cook County, Illinois
→2008South Shore Bungalow Historic District — Chicago, Cook County, Illinois
→1975South Shore Country Club — Chicago, Cook County, Illinois
→2018South Side Community Art Center — Chicago, Cook County, Illinois
→1992South Side German Historic District — Quincy, Adams County, Illinois
→1995South Side German Historic District (Boundary Increase) — Quincy, Adams County, Illinois
→1975South Side School — Geneso, Henry County, Illinois
→2004South Water Market — Chicago, Cook County, Illinois
→1980Spafford, Amos Catlin, House — Rockford, Winnebago County, Illinois
→1982Sparta Historic District — Sparta, Randolph County, Illinois
→2009Spiegel Office Building — Chicago, Cook County, Illinois
→2002Spivey Building — East St. Louis, St. Clair County, Illinois
→2008Sprague's Super Service — Normal, McLean County, Illinois
→1987Spring Valley House--Sulfur Springs Hotel — Utica, La Salle County, Illinois
→2000Spring--Douglas Historic District — Elgin, Kane County, Illinois
→2004Springdale Cemetery — Peoria, Peoria County, Illinois
→2011Squires, Frederick, House — Champaign, Champaign County, Illinois
→2003St. Anne's Episcopal Church — Anna, Union County, Illinois
→2010St. Charles Hospital — Aurora, Kane County, Illinois
→1991St. Charles Municipal Building — St. Charles, Kane County, Illinois
→1977St. Ignatius College — Chicago, Cook County, Illinois
→1984St. James Catholic Church and Cemetery — Lemont, Cook County, Illinois
→1974St. James Episcopal Church — Lewiston, Fulton County, Illinois
→1995St. James Episcopal Church — McLeansboro, Hamilton County, Illinois
→2012St. Johns Episcopal Church — Albion, Edwards County, Illinois
→1983St. Louis Street Historic District — Edwardsville, Madison County, Illinois
→2004St. Louis, Peoria and Northern Railroad Depot — Pekin, Tazewell County, Illinois
→1982St. Luke's Hospital Complex — Chicago, Cook County, Illinois
→1996St. Mary's Church — Beaverville, Iroquois County, Illinois
→1992St. Mary's Church of Gilberts — Gilberts, Kane County, Illinois
→2000St. Matthew Evangelical Lutheran School — Chicago, Cook County, Illinois
→1983St. Nicholas Hotel — Springfield, Sangamon County, Illinois
→1977St. Patrick's Roman Catholic Church — Chicago, Cook County, Illinois
→1980St. Paulus Evangelisch Lutherischen Gemeinde — Jonesboro, Union County, Illinois
→2018St. Thomas Catholic High School for Boys — Rockford, Winnebago County, Illinois
→1978St. Thomas Church and Convent — Chicago, Cook County, Illinois
→1974Stacy's Tavern — Glen Ellyn, Du Page County, Illinois
→1984Standard Oil Gasoline Station — Plainfield, Will County, Illinois
→1997Standard Oil Gasoline Station — Odell, Livingston County, Illinois
→1996Stapleford--Hover--Whitney House — Vermont, Fulton County, Illinois
→1994Starr Hotel — Mattoon, Coles County, Illinois
→1966Starved Rock ★ NHL — Ottawa, La Salle County, Illinois
→2004Starved Rock Lock and Dam Historic District — Ottawa, La Salle County, Illinois
→1985Starved Rock Lodge and Cabins — LaSalle-Peru, La Salle County, Illinois
→1972State Bank — Old Shawneetown, Gallatin County, Illinois
→2010State Bank Building — Collinsville, Madison County, Illinois
→1979State Savings Loan and Trust — Quincy, Adams County, Illinois
→1982Stauduhar House — Rock Island, Rock Island County, Illinois
→1982Stearns-Wadsworth House — Batavia, Kane County, Illinois
→1985Steffens, Joseph, House — Milledgeville, Carroll County, Illinois
→1974Stephenson County Courthouse — Freeport, Stephenson County, Illinois
→1980Stephenson, Benjamin, House — Edwardsville, Madison County, Illinois
→1996Sterling Masonic Temple — Sterling, Whiteside County, Illinois
→2007Steuben Club, The — Chicago, Cook County, Illinois
→1992Stevens House — Tiskilwa, Bureau County, Illinois
→1974Stevenson House — Bloomington, McLean County, Illinois
→1980Stevenson, Adlai E., I, House — Metamora, Woodford County, Illinois
→2003Steward, Lewis, House — Plano, Kendall County, Illinois
→1989Stewart, Minnie, House — Monmouth, Warren County, Illinois
→1979Stickney, George, House — Woodstock, McHenry County, Illinois
→1983Stillman's Run Battle Site — Stillman Valley, Ogle County, Illinois
→1978Stinson Memorial Library — Anna, Union County, Illinois
→1986Stolp Island Historic District — Aurora, Kane County, Illinois
→1983Stolp Woolen Mill Store — Aurora, Kane County, Illinois
→1981Stone Arch Bridge — Champaign, Champaign County, Illinois
→1986Stone Arch Bridge — Danville, Vermilion County, Illinois
→1980Stone Manor — Lockport, Will County, Illinois
→1981Stone Quarry Bridge — Charleston, Coles County, Illinois
→2022Stone Temple Baptist Church — Chicago, Cook County, Illinois
→1984Stoneleigh Manor — Evanston, Cook County, Illinois
→2013Stony Island Trust and Savings Bank Building — Chicago, Cook County, Illinois
→2013Storkline Furniture Corporation Factory — Chicago, Cook County, Illinois
→1980Story-Camp Rowhouses — Chicago, Cook County, Illinois
→2002Stotlar, Ed. M., House — Marion, Williamson County, Illinois
→2013Strand Hotel — Chicago, Cook County, Illinois
→2014Strauss, Jesse L., Estate — Glencoe, Cook County, Illinois
→2015Strawbridge-Shepherd House — Springfield, Sangamon County, Illinois
→1995Strawn, Jeremiah, House — Ottawa, La Salle County, Illinois
→1996Streator Public Library — Streator, La Salle County, Illinois
→1991Streibich Blacksmith Shop — Newman, Douglas County, Illinois
→2023Strevell House — Pontiac, Livingston County, Illinois
→1975Studebaker Building — Chicago, Cook County, Illinois
→1978Sugar Creek Covered Bridge — Chatham, Sangamon County, Illinois
→1992Sullivan, Joseph P. O., House — Maywood, Cook County, Illinois
→1990Sunderlage Farm Smokehouse — Hoffman Estates, Cook County, Illinois
→2011Sutherland Hotel — Chicago, Cook County, Illinois
→1982Swannell, Charles E., House — Kankakee, Kankakee County, Illinois
→1985Swedish American Telephone Company Building — Chicago, Cook County, Illinois
→1985Swedish Club of Chicago — Chicago, Cook County, Illinois
→1978Swift House — Chicago, Cook County, Illinois
→2005Swift, Louis F., House — Lake Forest, Lake County, Illinois
→1978Sycamore Historic District — Sycamore, De Kalb County, Illinois
→1978Sylvan Road Bridge — Glencoe, Cook County, Illinois
→1979Table Grove Community Church — Table Grove, Fulton County, Illinois
→1980Taft Farmstead — Rochester, Sangamon County, Illinois
→1966Taft, Lorado, Midway Studios ★ NHL — Chicago, Cook County, Illinois
→1988Tallman, Horace M., House — Shelbyville, Shelby County, Illinois
→2008Talman West Ridge Bungalow Historic District — Chicago, Cook County, Illinois
→1976Tanner, William A., House — Aurora, Kane County, Illinois
→1980Tartar's Ferry Bridge — Smithfield, Fulton County, Illinois
→2004Taylor Apartments — Springfield, Sangamon County, Illinois
→1984Taylor, Oscar, House — Freeport, Stephenson County, Illinois
→1988Taylorville Chautauqua Auditorium — Taylorville, Christian County, Illinois
→1985Taylorville Courthouse Square Historic District — Taylorville, Christian County, Illinois
→1985Tazewell County Courthouse — Pekin, Tazewell County, Illinois
→2020Teeple Barn — Elgin, Kane County, Illinois
→1990Teich, Curt, and Company Building — Chicago, Cook County, Illinois
→1979Terwilliger House — Woodstock, McHenry County, Illinois
→1972Thebes Courthouse — Thebes, Alexander County, Illinois
→1980Theurer-Wrigley House — Chicago, Cook County, Illinois
→2016Third Church of Christ, Scientist — Chicago, Cook County, Illinois
→1999Third St. Bridge — Delavan, Tazewell County, Illinois
→1983Thomas, F. D., House — Camp Point, Adams County, Illinois
→1972Thomas, Frank, House — Oak Park, Cook County, Illinois
→1983Thomas, Lewis H., House — Virden, Montgomery County, Illinois
→1992Thompkins, Jennie S., House — Maywood, Cook County, Illinois
→1975Thompson Mill Covered Bridge — Cowden, Shelby County, Illinois
→2002Thompson, James S., House — New Boston, Mercer County, Illinois
→1997Thorne, George R., House — Midlothian, Cook County, Illinois
→2020Tiedemann House — O'Fallon, St. Clair County, Illinois
→1986Tiger--Anderson House — Springfield, Sangamon County, Illinois
→1982Tillery, Virginia, Round Barn — Whitehall, Greene County, Illinois
→1972Tinker Swiss Cottage — Rockford, Winnebago County, Illinois
→1999Tomek, F.F., House ★ NHL — Riverside, Cook County, Illinois
→2005Town House, The — Springfield, Sangamon County, Illinois
→2005Townsend House — Stockton, Jo Daviess County, Illinois
→2002Transfer House — Decatur, Macon County, Illinois
→1974Tree Studio Building and Annexes — Chicago, Cook County, Illinois
→1983Tri-Taylor Historic District — Chicago, Cook County, Illinois
→1988Tri-Taylor Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→1978Trinity Episcopal Church — Wheaton, Du Page County, Illinois
→1996Trobaugh--Good House — Decatur, Macon County, Illinois
→1995Trumbull Park — Chicago, Cook County, Illinois
→1975Trumbull, Lyman, House ★ NHL — Alton, Madison County, Illinois
→1998Trustees System Service Building — Chicago, Cook County, Illinois
→1984Tudor Manor — Evanston, Cook County, Illinois
→2017Turkey Hill Grange Hall — Belleville, St. Clair County, Illinois
→2015Turner School — Rockford, Winnebago County, Illinois
→1991Turner Town Hall — West Chicago, Du Page County, Illinois
→2021Turney-Hall House (Additional Documentation) — Fairfield, Wayne County, Illinois
→1988Twin Tower Sanctuary — Orland Park, Cook County, Illinois
→2010Twiss, James C., House — Aviston, Clinton County, Illinois
→1989U-505 (IX C U-Boat) ★ NHL — Chicago, Cook County, Illinois
→1979U. S. Post Office — Mattoon, Coles County, Illinois
→1981U.S. Post Office — Joliet, Will County, Illinois
→1976U.S. Post Office — Champaign, Champaign County, Illinois
→1977U.S. Post Office and Courthouse — Quincy, Adams County, Illinois
→2012U.S. Post Office and Courthouse — Peoria, Peoria County, Illinois
→1979Ulery, Eli, House — Mount Zion, Macon County, Illinois
→1999Union Church — Oreana, Macon County, Illinois
→2000Union House — Orangeville, Stephenson County, Illinois
→2003Union Lookout — Jonesboro, Union County, Illinois
→1972Union Miners Cemetery — Mount Olive, Macoupin County, Illinois
→2006Union Park Congregational Church and Carpenter Chapel — Chicago, Cook County, Illinois
→2010Union Park Hotel — Chicago, Cook County, Illinois
→1978Union Station — Springfield, Sangamon County, Illinois
→1978Union Station — Joliet, Will County, Illinois
→2014Union Trust Bank Company Building — East St. Louis, St. Clair County, Illinois
→1991Unitarian Church of Urbana — Urbana, Champaign County, Illinois
→1983United Methodist Church of Batavia — Batavia, Kane County, Illinois
→2016United States Custom House — Chicago, Cook County, Illinois
→2016United States Post Office and Court House — Danville, Vermilion County, Illinois
→2014United States Post Office and Courthouse — East Saint Louis, St. Clair County, Illinois
→2000United States Post Office--Belvidere — Belvidere, Boone County, Illinois
→2001United States Post Office--Chicago — Chicago, Cook County, Illinois
→1982Unity Church — Mattoon, Coles County, Illinois
→1986Unity Hall — Chicago, Cook County, Illinois
→1970Unity Temple ★ NHL — Oak Park, Cook County, Illinois
→2005University Apartments — Chicago, Cook County, Illinois
→1973University Hall — Lincoln, Logan County, Illinois
→1986University of Illinois Astronomical Observatory — Urbana, Champaign County, Illinois
→1994University of Illinois Experimental Dairy Farm Historic District — Urbana, Champaign County, Illinois
→1989University of Illinois Observatory ★ NHL — Urbana, Champaign County, Illinois
→1978Upper Alton Historic District — Alton, Madison County, Illinois
→1991Upper Bluff Historic District — Joliet, Will County, Illinois
→1986Uptown Broadway Building — Chicago, Cook County, Illinois
→2019Uptown Square Historic District — Chicago, Cook County, Illinois
→2006Urbana--Lincoln Hotel--Lincoln Square Mall — Urbana, Champaign County, Illinois
→2002Ursa Town Hall — Ursa, Adams County, Illinois
→1996US Army Aircraft C-53-DO-41-20124 — Bloomington, McLean County, Illinois
→1999US ARMY Aircraft P-51D-25NA 44-73287 — Springfield, Sangamon County, Illinois
→1972USS SILVERSIDES (SS 236) National Historic Landmark ★ NHL — Chicago, Cook County, Illinois
→2009Valencia Court Apartments — Rockford, Winnebago County, Illinois
→2015Van Dolah, David Hyatt, House — Lexington, McLean County, Illinois
→1982Van Epps, William H., House — Dixon, Lee County, Illinois
→2016Van Hagen, George E., House — Barrington Hills, Lake County, Illinois
→2016Van Leer, Margaret and Bird, Broadview Mansion — Normal, McLean County, Illinois
→1974Vandalia Statehouse — Vandalia, Fayette County, Illinois
→2008Vassar Swiss Underwear Company Building — Chicago, Cook County, Illinois
→2021Verdurette — New Boston, Mercer County, Illinois
→1997Vermont Historic District — Vermont, Fulton County, Illinois
→1988Vermont Masonic Hall — Vermont, Fulton County, Illinois
→2013Vesta Accumulator Company Building — Chicago, Cook County, Illinois
→2007Vial, Robert, House — Burr Ridge, Cook County, Illinois
→1986Victory Sculpture — Chicago, Cook County, Illinois
→1995Vienna Public Library — Vienna, Johnson County, Illinois
→1986Villa Avenue Train Station — Villa Park, Du Page County, Illinois
→1978Villa de Kathrine — Quincy, Adams County, Illinois
→1979Villa Historic District — Chicago, Cook County, Illinois
→1983Villa Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→2013Village Hall — Sheffield, Bureau County, Illinois
→2008Village of Davis Junction Town Hall — Davis Junction, Ogle County, Illinois
→1980Vine-Oakwood-Green Bay Road Historic District — Lake Forest, Lake County, Illinois
→2003Virginia Theater — Champaign, Champaign County, Illinois
→1988Vogt, Karl, Building — Tinley Park, Cook County, Illinois
→1985von KleinSmid Mansion — Sandwich, De Kalb County, Illinois
→1979Voorhies Castle — Bement, Piatt County, Illinois
→1983Vriner's Confectionery — Champaign, Champaign County, Illinois
→1986Wabash Avenue YMCA — Chicago, Cook County, Illinois
→1994Wabash Railroad Station and Railway Express Agency — Decatur, Macon County, Illinois
→1990Wagner, Robert, House — Rock Island, Rock Island County, Illinois
→1980Waller, William, House — Chicago, Cook County, Illinois
→1989Walnut Grove Farm — Knoxville, Knox County, Illinois
→2013Walser, Joseph J., House — Chicago, Cook County, Illinois
→1999Waltmire Bridge — Tremont, Tazewell County, Illinois
→2001Ward, Thornton, Estate — Toledo, Cumberland County, Illinois
→1979Warfield, William S., House — Quincy, Adams County, Illinois
→2001Warm Air Research House — Urbana, Champaign County, Illinois
→1982Warner, Seth, House — Chicago, Cook County, Illinois
→1995Warren Commercial Historic District — Warren, Jo Daviess County, Illinois
→1986Warren, Edward Kirk, House and Garage — Evanston, Cook County, Illinois
→1977Warsaw Historic District — Warsaw, Hancock County, Illinois
→1973Washburne, Elihu Benjamin, House — Galena, Jo Daviess County, Illinois
→2004Washington Park — Chicago, Cook County, Illinois
→1992Washington Park — Springfield, Sangamon County, Illinois
→1973Washington Park Historic District — Ottawa, La Salle County, Illinois
→1991Washington Square — Chicago, Cook County, Illinois
→2003Washington Square Historic District — Chicago, Cook County, Illinois
→1974Water Tower, Building 49 — Fort Sheridan, Lake County, Illinois
→1978Waterloo Historic District — Waterloo, Monroe County, Illinois
→1999Watseka Union Depot — Watseka, Iroquois County, Illinois
→2017Watson, David and Julia, House — Polo, Ogle County, Illinois
→1978Waugh, Robert, House — Sparland, Marshall County, Illinois
→2002Waukegan Building — Waukegan, Lake County, Illinois
→2013Waukegan Public Library — Waukegan, Lake County, Illinois
→1978Wayne Village Historic District — Wayne, Du Page County, Illinois
→1993Wear, Washington C., House — Princeville, Peoria County, Illinois
→1979Weber, Howard K., House — Springfield, Sangamon County, Illinois
→1984Weber, Robert, Round Barn — Durand, Winnebago County, Illinois
→2011Wee Haven — Champaign, Champaign County, Illinois
→2018Weinrich, Christian F. — Chester, Randolph County, Illinois
→1983Weir, John, House — Edwardsville, Madison County, Illinois
→1992Weir, William S., Jr., House — Monmouth, Warren County, Illinois
→1982Weisel, Andrew, House — St. Charles, Kane County, Illinois
→2018Weister, Frederick, House — Chester, Randolph County, Illinois
→1985Welling-Everly Horse Barn — Adair, McDonough County, Illinois
→1974Wells-Barnett, Ida B., House ★ NHL — Chicago, Cook County, Illinois
→1984Wenner, Charles, House — Galena, Jo Daviess County, Illinois
→2010West Argyle Street Historic District — Chicago, Cook County, Illinois
→2013West Argyle Street Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→1976West Bluff Historic District — Peoria, Peoria County, Illinois
→2007West Burton Place Historic District — Chicago, Cook County, Illinois
→2010West Chatham Bungalow Historic District — Chicago, Cook County, Illinois
→2007West Downtown Rockford Historic District — Rockford, Winnebago County, Illinois
→2002West End Historic District — Decatur, Macon County, Illinois
→2002West Frankfort City Hall — West Frankfort, Franklin County, Illinois
→1978West Jackson Boulevard District — Chicago, Cook County, Illinois
→1989West Jackson Historic District (Boundary Increase) — Chicago, Cook County, Illinois
→2013West Loop--LaSalle Street Historic District — Chicago, Cook County, Illinois
→2012West Park Neighborhood Historic District — Lake Forest, Lake County, Illinois
→2018West Pullman Elementary School — Chicago, Cook County, Illinois
→1986West Side Historic District — Aurora, Kane County, Illinois
→1975West Walnut Street Historic District — Carbondale, Jackson County, Illinois
→2003West Water Tower and Ground Storage Tank — Orion, Henry County, Illinois
→2007Westclox Manufacturing Plant Historic District — Peru, La Salle County, Illinois
→1998Western Illinois State Normal School Building — Macomb, McDonough County, Illinois
→1981Western Springs Water Tower — Western Springs, Cook County, Illinois
→2006Westervelt Christian Church — Westervelt, Shelby County, Illinois
→1984Westminster — Evanston, Cook County, Illinois
→2009Westover Road Non-Commissioned Officers' Housing Historic District — Highwood, Lake County, Illinois
→1975Weyerhaeuser House — Rock Island, Rock Island County, Illinois
→1999Wheeler--Kohn House — Chicago, Cook County, Illinois
→1992Wheeler--Magnus Round Barn — Arlington Heights, Cook County, Illinois
→1998White and Company's Goose Lake Stoneware Manufactury — Morris, Grundy County, Illinois
→1998White and Company's Goose Lake Tile Works — Morris, Grundy County, Illinois
→1994White Building — Bloomington, McLean County, Illinois
→1980White Hall Foundry — White Hall, Greene County, Illinois
→1987White Hall Historic District — White Hall, Greene County, Illinois
→1993White Hall Historic District (Boundary Increase) — White Hall, Greene County, Illinois
→2003White Oak Hall — Rushville, Schuyler County, Illinois
→1985White Pines State Park Lodge and Cabins — Mount Morris, Ogle County, Illinois
→1988White Place Historic District — Bloomington, McLean County, Illinois
→1980White, Louise, School — Batavia, Kane County, Illinois
→1997White, W.E., Building — Stockton, Jo Daviess County, Illinois
→1990Whitney, Col. Nathan, House — Franklin Grove, Lee County, Illinois
→1989Whitney, William, House — Hinsdale, Du Page County, Illinois
→2011Wholesale Florists Exchange — Chicago, Cook County, Illinois
→1979Wicker Park Historic District — Chicago, Cook County, Illinois
→1985Wild Flower and Bird Sanctuary in Mahoney Park — Kenilworth, Cook County, Illinois
→2023Will County Courthouse — Joliet, Will County, Illinois
→1972Will County Historical Society Headquarters — Lockport, Will County, Illinois
→1984Will Rogers Theatre and Commercial Block — Charleston, Coles County, Illinois
→1966Willard, Frances, House ★ NHL — Evanston, Cook County, Illinois
→1975Williams, Dr. Daniel Hale, House ★ NHL — Chicago, Cook County, Illinois
→1987Williams, James Robert, House — Carmi, White County, Illinois
→1976Williams, Silas, House — Streator, La Salle County, Illinois
→2007Williamson County Jail — Marion, Williamson County, Illinois
→1995Willits, Levi, House — New Boston, Mercer County, Illinois
→1980Willits, Ward Winfield, House — Highland Park, Lake County, Illinois
→1985Wilson, Judge Isaac, House — Batavia, Kane County, Illinois
→1979Winchester Historic District — Winchester, Scott County, Illinois
→2009Wing Park Golf Course — Elgin, Kane County, Illinois
→1970Winslow, William H., House And Stable — River Forest, Cook County, Illinois
→2021Witwer House — Rockford, Winnebago County, Illinois
→2002Woman's Christian Temperance Union Administration Building — Evanston, Cook County, Illinois
→2006Woman's Club of Evanston — Evanston, Cook County, Illinois
→2003Women's Gymnasium, University of Illinois at Urbana-Champaign — Urbana, Champaign County, Illinois
→2003Women's Residence Hall--West Residence Hall, University of Illinois at Urbana-Champaign — Urbana, Champaign County, Illinois
→1995Wood--Tellkamp House — LaMoille, Bureau County, Illinois
→1982Wood, Ernest M., Office and Studio — Quincy, Adams County, Illinois
→1970Wood, John, Mansion — Quincy, Adams County, Illinois
→2002Wooden Alley — Chicago, Cook County, Illinois
→2002Woodland Cemetery — Quincy, Adams County, Illinois
→1985Woodlawn Cemetery — Carbondale, Jackson County, Illinois
→2007Woodlawn Farm — Jacksonville, Morgan County, Illinois
→1974Woodstock Opera House — Woodstock, McHenry County, Illinois
→1982Woodstock Square Historic District — Woodstock, McHenry County, Illinois
→1986Wright, Dr. Charles M., House — Altamont, Effingham County, Illinois
→1972Wright, Frank Lloyd, House and Studio ★ NHL — Oak Park, Cook County, Illinois
→2005Wright, Stephen, House — Paw Paw, Lee County, Illinois
→2004Wrightwood Bungalow Historic District — Chicago, Cook County, Illinois
→1982Yakel House and Union Brewery — Alton, Madison County, Illinois
→1998Yale, The — Chicago, Cook County, Illinois
→1984Yates, Gov. Richard, House — Springfield, Sangamon County, Illinois
→1989YMCA Hotel — Chicago, Cook County, Illinois
→1984Yondorf Block and Hall — Chicago, Cook County, Illinois
→1995Yorkville School — Yorkville, Kendall County, Illinois
→1982Young, Joshua P., House — Blue Island, Cook County, Illinois
→2007YWCA Building — Peoria, Peoria County, Illinois
→2011Ziock Building — Rockford, Winnebago County, Illinois
→1980Zion Chapter House — Zion, Lake County, Illinois
→2013Zoe Theatre — Pittsfield, Pike County, Illinois
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