By state
Historic places in Maryland
1,516 Maryland listings on the National Register of Historic Places, each mapped and dated.
1975
16 Altamont Terrace — Cumberland, Allegany County, Maryland
→1975200--208 Decatur Street — Cumberland, Allegany County, Maryland
→2003Abell house — Leonardtown, St. Mary's County, Maryland
→1984Abington Farm — Millersville, Anne Arundel County, Maryland
→2005Abraham Hall — Beltsville, Prince George's County, Maryland
→1984Academy Grove Historic District — Upper Fairmount, Somerset County, Maryland
→1992Acquinsicke — Pomfret, Charles County, Maryland
→1988Adams Farm — Princess Anne, Somerset County, Maryland
→1979African Methodist Episcopal Church — Cumberland, Allegany County, Maryland
→1999Aigburth Vale — Towson, Baltimore County, Maryland
→2004Airview Historic District — Middletown, Frederick County, Maryland
→1996Airy Hill — Chestertown, Kent County, Maryland
→1990Alcott, Louisa May, School — Baltimore (Independent City), Baltimore County, Maryland
→2003All Faith Church — Charlotte Hall, St. Mary's County, Maryland
→1979All Hallows Episcopal Church — Snow Hill, Worcester County, Maryland
→1969All Hallows' Church — Davidsonville, Anne Arundel County, Maryland
→1990All Saints Church at Monie — Venton, Somerset County, Maryland
→1983All Saints' Church — Easton, Talbot County, Maryland
→1973All Saints' Church — Lower Marlboro, Calvert County, Maryland
→2023Ambassador Theater — Baltimore, Baltimore County, Maryland
→1973Amelung House and Glassworks — Urbana, Frederick County, Maryland
→1973American Brewery — Baltimore (Independent City), Baltimore County, Maryland
→2013American Ice Company — Baltimore, Baltimore County, Maryland
→2002American Ice Company Baltimore Plant No. 2 — Baltimore (Independent City), Baltimore County, Maryland
→1975Ammendale Normal Institute — Beltsville, Prince George's County, Maryland
→1974Anchorage, The — Easton, Talbot County, Maryland
→1984Anderson Chapel — Swanton, Garrett County, Maryland
→1996Annapolis National Cemetery — Annapolis, Anne Arundel County, Maryland
→1983Anne Arundel County Free School — Gambrills, Anne Arundel County, Maryland
→2012Anneslie Historic District — Towson, Baltimore County, Maryland
→1978Annington — Poolesville, Montgomery County, Maryland
→1979Antietam Hall — Hagerstown, Washington County, Maryland
→1975Antietam Iron Furnace Site and Antietam Village — Antietam, Washington County, Maryland
→2018Antietam National Battlefield — Sharpsburg, Washington County, Maryland
→1977Antrim — Taneytown, Carroll County, Maryland
→2001Appler--Englar House — New Windsor, Carroll County, Maryland
→1974Araby — Mason's Springs, Charles County, Maryland
→1978Arcadia — Frederick, Frederick County, Maryland
→2004Arcadia--Beverly Hills Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1992Arlington — Westover, Somerset County, Maryland
→2006Arter, Philip and Uriah, Farm — Union Mills, Carroll County, Maryland
→1987Arter, Solomon, House — Union Mills, Carroll County, Maryland
→1972Artisan's House — Annapolis, Anne Arundel County, Maryland
→1999Asbury Methodist Episcopal Church — Allen, Wicomico County, Maryland
→1977Ash Hill — Hyattsville, Prince George's County, Maryland
→1994Ashland — Upper Marlboro, Prince George's County, Maryland
→1989Athol — Henderson, Caroline County, Maryland
→1975Auburn House — Towson, Baltimore County, Maryland
→1987Avalon — New Windsor, Carroll County, Maryland
→2005Avery, Capt. Salem, House — Shady Side, Anne Arundel County, Maryland
→1975Avondale — Westminster, Carroll County, Maryland
→1979Avondale Mill — Laurel, Prince George's County, Maryland
→1977B & O Bridge — Keedysville, Washington County, Maryland
→1978B & O Railroad Potomac River Crossing — Harpers Ferry, Washington County, Maryland
→1979B'er Chayim Temple — Cumberland, Allegany County, Maryland
→1984Bachelor's Hope — Centreville, Queen Anne's County, Maryland
→1972Bachelor's Hope — Chaptico, St. Mary's County, Maryland
→1985Bachrach, David, House — Baltimore (Independent City), Baltimore County, Maryland
→1998Bagby Furniture Company Building — Baltimore (Independent City), Baltimore County, Maryland
→1978Baker Farm — Keedysville, Washington County, Maryland
→1982Baker, James B., House — Aberdeen, Harford County, Maryland
→1975Ballestone Mansion — Essex, Baltimore County, Maryland
→1993BALTIMORE (tug) ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→2004Baltimore and Ohio Locust Point Grain Terminal Elevator — Baltimore (Independent City), Baltimore County, Maryland
→1974Baltimore and Ohio Railroad Station, Oakland — Oakland, Garrett County, Maryland
→1966Baltimore and Ohio Transportation Museum and Mount Clare Station ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1983Baltimore City College — Baltimore (Independent City), Baltimore County, Maryland
→2003Baltimore City College — Baltimore (Independent City), Baltimore County, Maryland
→1973Baltimore City Hall — Baltimore (Independent City), Baltimore County, Maryland
→1998Baltimore City Passenger Railway Power House and Car Barn — Baltimore (Independent City), Baltimore County, Maryland
→1987Baltimore College of Dental Surgery — Baltimore (Independent City), Baltimore County, Maryland
→1972Baltimore County Courthouse — Towson, Baltimore County, Maryland
→2009Baltimore County Jail — Towson, Baltimore County, Maryland
→2000Baltimore County School No. 7 — Cockeysville, Baltimore County, Maryland
→2002Baltimore East/South Clifton Park Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1977Baltimore Equitable Society — Baltimore (Independent City), Baltimore County, Maryland
→2022Baltimore Federal Savings & Loan Association — Baltimore, Baltimore County, Maryland
→2003Baltimore Gas and Electric Company Building — Baltimore (Independent City), Baltimore County, Maryland
→1980Baltimore General Dispensary — Baltimore (Independent City), Baltimore County, Maryland
→2000Baltimore Grand — Baltimore (Independent City), Baltimore County, Maryland
→1976Baltimore Hebrew Congregation Synagogue — Baltimore (Independent City), Baltimore County, Maryland
→2002Baltimore Light Station — Gibson Island, Anne Arundel County, Maryland
→1991Baltimore--Washington Parkway — Baltimore, Prince George's County, Maryland
→1980BANCROFT (motor vessel) — Baltimore (Independent City), Baltimore County, Maryland
→1980Bankard-Gunther Mansion — Baltimore (Independent City), Baltimore County, Maryland
→1976Bard's Field — Ridge, St. Mary's County, Maryland
→2011Bare Hills Historic District — Bare Hills, Baltimore County, Maryland
→1980Bare Hills House — Baltimore, Baltimore County, Maryland
→1992Barnaby House — Oxford, Talbot County, Maryland
→1978Barney, Commodore Joshua, House — Savage, Howard County, Maryland
→1983Barre Circle Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1994Bates, Wiley H., High School — Annapolis, Anne Arundel County, Maryland
→1973Battle Monument — Baltimore (Independent City), Baltimore County, Maryland
→1996Beale, Edward, House — Potomac, Montgomery County, Maryland
→1973Beall-Dawson House — Rockville, Montgomery County, Maryland
→1979Beall's Pleasure — Landover, Prince George's County, Maryland
→1984Beauchamp House — Westover, Somerset County, Maryland
→2001Beaudley — Tyaskin, Wicomico County, Maryland
→1974Beckford — Princess Anne, Somerset County, Maryland
→1985Bel Air Armory — Bel Air, Harford County, Maryland
→1985Bel Air Courthouse Historic District — Bel Air, Harford County, Maryland
→1977Belair — Bowie, Prince George's County, Maryland
→1973Belair Stables — Bowie, Prince George's County, Maryland
→1973Bell Tower Building — Cumberland, Allegany County, Maryland
→1979Bell-Varner House — Leitersburg, Washington County, Maryland
→1971Bellefields — Croom, Prince George's County, Maryland
→1986Bellevue — Accokeek, Prince George's County, Maryland
→2008Bellona-Gittings Historic District — Baltimore, Baltimore County, Maryland
→1984Belt, J. A., Building — Gaithersburg, Montgomery County, Maryland
→1977Belvedere Hotel — Baltimore (Independent City), Baltimore County, Maryland
→1971Belvoir — Crownsville, Anne Arundel County, Maryland
→2004Bennett--Kelly Farm — Sykesville, Carroll County, Maryland
→1975Bennett's Adventure — Allen, Wicomico County, Maryland
→1979Bennies Hill Road Bridge — Middletown, Frederick County, Maryland
→1980Benson Building — Baltimore (Independent City), Baltimore County, Maryland
→1990Benson-Hammond House — Linthicum Heights, Anne Arundel County, Maryland
→2003Berkley Crossroads Historic District — Darlington, Harford County, Maryland
→1988Berkley School — Darlington, Harford County, Maryland
→1980Berlin Commercial District — Berlin, Worcester County, Maryland
→1985BERNICE J. (skipjack) — Chestertown, Kent County, Maryland
→1990Best Endeavor — Churchville, Harford County, Maryland
→1977Bethesda Meetinghouse — Bethesda, Montgomery County, Maryland
→1977Bethesda Naval Hospital Tower — Bethesda, Montgomery County, Maryland
→1999Bethesda Theatre — Bethesda, Montgomery County, Maryland
→1979Bethlehem Methodist Episcopal Church — Taylor's Island, Dorchester County, Maryland
→1984Betterton Historic District — Betterton, Kent County, Maryland
→1973Beverly — Princess Anne, Somerset County, Maryland
→1975Beverly — Pocomoke City, Worcester County, Maryland
→1984Big Bottom Farm — Cumberland, Allegany County, Maryland
→2001Biggs, William and Catherine, Farm — Detour, Carroll County, Maryland
→1985BILLIE P. HALL (log canoe) — Oxford, Talbot County, Maryland
→1980Bingham-Brewer House — Rockville, Montgomery County, Maryland
→1985Bishopton — Church Hill, Queen Anne's County, Maryland
→1972Bloomingdale — Queenstown, Queen Anne's County, Maryland
→1976Bloomington Viaduct — Bloomington, Garrett County, Maryland
→2000Bloomsbury — Frederick, Frederick County, Maryland
→1973Bohemia Farm — Earleville, Cecil County, Maryland
→2010Bohemian National Cemetery — Baltimore, Baltimore County, Maryland
→1972Bollman Suspension and Trussed Bridge ★ NHL — Savage, Howard County, Maryland
→1971Bolton Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1977Bon Air — Fallston, Harford County, Maryland
→2005Boonsboro Historic District — Boonesboro, Washington County, Maryland
→1984Borden Mines Superintendent's House — Frostburg, Allegany County, Maryland
→1975Borderside — Bloomington, Garrett County, Maryland
→1975Bostwick — Bladensburg, Prince George's County, Maryland
→1978Bounds Lott — Allen, Wicomico County, Maryland
→1998Bowie Railroad Buildings — Bowie, Prince George's County, Maryland
→1973Bowieville — Upper Marlboro, Prince George's County, Maryland
→1982Bowling Heights — Upper Marlboro, Prince George's County, Maryland
→1972Bowlingly — Queenstown, Queen Anne's County, Maryland
→1996Bowlus Mill House — Spoolsville, Frederick County, Maryland
→1977Bowman House — Boonsboro, Washington County, Maryland
→1983Brampton — Chestertown, Kent County, Maryland
→2020Brandenburg, Henry, House — Myersville, Frederick County, Maryland
→1978Branton Manor — Sykesville, Carroll County, Maryland
→1980Breakneck Road Historic District — Flintstone, Allegany County, Maryland
→1986Brentwood Farm — Allen, Somerset County, Maryland
→1985Brewers Exchange — Baltimore (Independent City), Baltimore County, Maryland
→1970Brice House ★ NHL — Annapolis, Anne Arundel County, Maryland
→1988Brick Hill — Baltimore (Independent City), Baltimore County, Maryland
→2009Brick House Farm — Greensboro, Caroline County, Maryland
→1996Brick House on the Pike — Ellicott City, Howard County, Maryland
→1974Brightwood — Hagerstown, Washington County, Maryland
→2011Broad Creek Historic District — Fort Washington, Prince George's County, Maryland
→1987Brookefield of the Berrys — Croom, Prince George's County, Maryland
→1979Brookeville Historic District — Brookeville, Montgomery County, Maryland
→1978Brookeville Woolen Mill and House — Brookeville, Montgomery County, Maryland
→1977Brooklandville House — Brooklandville, Baltimore County, Maryland
→1972Brooklandwood — Brooklandville, Baltimore County, Maryland
→1991Broom's Bloom — Bel Air, Harford County, Maryland
→1982Brown, Alex, Building — Baltimore (Independent City), Baltimore County, Maryland
→1987Brown, Jeremiah, House and Mill Site — Rising Sun, Cecil County, Maryland
→1987Brown, Mercer, House — Rising Sun, Cecil County, Maryland
→1980Brown, Moses, House — Eldersburg, Carroll County, Maryland
→1983Brown's Arcade — Baltimore (Independent City), Baltimore County, Maryland
→2023Brunswick Historic District — Brunswick, Frederick County, Maryland
→1985Bryantown Historic District — Bryantown, Charles County, Maryland
→1978Buck House — Upper Marlboro, Prince George's County, Maryland
→1982Buckeystown Historic District — Buckeystown, Frederick County, Maryland
→1982Buckingham House and Industrial School Complex — Buckeystown, Frederick County, Maryland
→1998Buena Vista — Leonardtown, St. Mary's County, Maryland
→1994Building at 239 North Gay Street — Baltimore (Independent City), Baltimore County, Maryland
→1994Building at 409 West Baltimore Street — Baltimore (Independent City), Baltimore County, Maryland
→1994Building at 419 West Baltimore Street — Baltimore (Independent City), Baltimore County, Maryland
→1995Building at 423 West Baltimore Street — Baltimore (Independent City), Baltimore County, Maryland
→1980Buildings at 10, 12, 14, and 16 East Chase Street — Baltimore (Independent City), Baltimore County, Maryland
→1984Buildings at 1601-1830 St. Paul Street and 12-20 E. Lafayette Street — Baltimore (Independent City), Baltimore County, Maryland
→1978Bullfrog Road Bridge — Taneytown, Frederick County, Maryland
→1984Bunker Hill — Millersville, Anne Arundel County, Maryland
→1975Burkittsville — Burkittsville, Frederick County, Maryland
→1982Burleigh — Ellicott City, Howard County, Maryland
→1974Burley Manor — Berlin, Worcester County, Maryland
→1973Burrages End — Lothian, Anne Arundel County, Maryland
→1987Business and Government Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1982Butchers Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2005Butler House — Oxon Hill, Prince George's County, Maryland
→1978Butler, Wright, House — Cumberland, Allegany County, Maryland
→1973Cabin John Aqueduct — Glen Echo, Montgomery County, Maryland
→1983Caldicott — Rehobeth, Somerset County, Maryland
→1975Caleb's Discovery — Berlin, Worcester County, Maryland
→1973Callahan, John, House — Annapolis, Anne Arundel County, Maryland
→2005Calloway, Thomas J., House — Lanham, Prince George's County, Maryland
→2002Calvert Hills Historic District — Collerge Park, Prince George's County, Maryland
→1990Cambridge Historic District, Wards I and III — Cambridge, Dorchester County, Maryland
→1989Camp Greentop Historic District — Thurmont, Frederick County, Maryland
→1989Camp Misty Mount Historic District — Thurmont, Frederick County, Maryland
→1979Canada Hose Company Building — Cumberland, Allegany County, Maryland
→1975Cannon, Burton, House — Cokesbury, Somerset County, Maryland
→1980Cannonball House — St. Michaels, Talbot County, Maryland
→1980Canton Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1978Canton House — Baltimore (Independent City), Baltimore County, Maryland
→1980Captain's Houses — Centreville, Queen Anne's County, Maryland
→2008Carderock Springs Historic District — Bethesda, Montgomery County, Maryland
→1980Carousel at Glen Echo Park — Glen Echo, Montgomery County, Maryland
→1975Carroll County Almshouse and Farm — Westminster, Carroll County, Maryland
→1973Carroll Mansion — Baltimore (Independent City), Baltimore County, Maryland
→2014Carrollton Hall — Ellicott City, Howard County, Maryland
→1997Carrollton Manor — Buckeystown, Frederick County, Maryland
→1971Carrollton Viaduct ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1991Carson, Rachel, House ★ NHL — Silver Spring, Montgomery County, Maryland
→1973Carvill Hall — Chestertown, Kent County, Maryland
→1966Casselman's Bridge, National Road ★ NHL — Grantsville, Garrett County, Maryland
→1975Castle Hall — Goldsboro, Caroline County, Maryland
→1988Catalpa Farm — Princess Anne, Somerset County, Maryland
→1987Cathedral Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1972Catoctin Manor House — Catoctin Furnace, Frederick County, Maryland
→2002Catonsville Historic District, Old — Catonsville, Baltimore County, Maryland
→1988Caves Valley Historic District — Owings Mills, Baltimore County, Maryland
→2000Cecil Apartments — Baltimore (Independent City), Baltimore County, Maryland
→1978Cecil's Mill Historic District — Great Mills, St. Mary's County, Maryland
→1996Cedar Grove — Baltimore (Independent City), Baltimore County, Maryland
→1979Cedar Grove — La Plata, Charles County, Maryland
→1999Cedar Grove — Williamsport, Washington County, Maryland
→1991Cedar Hill — Westover, Somerset County, Maryland
→1973Cedar Hill — Barstow, Calvert County, Maryland
→1969Cedar Park — Galesville, Anne Arundel County, Maryland
→2003Cedarcroft Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2006Central Catonsville and Summit Park Historic District — Catonsville, Baltimore County, Maryland
→1985Centreville Armory — Centreville, Queen Anne's County, Maryland
→2004Centreville Historic District — Centreville, Queen Anne's County, Maryland
→2020Ceres Bethel AME Church — Burkittsville, Frederick County, Maryland
→1983Chamber of Commerce Building — Baltimore (Independent City), Baltimore County, Maryland
→2016Chambers Park Log Cabin — Federalsburg, Caroline County, Maryland
→1988Chambers, Whitakker, Farm ★ NHL — Westminster, Carroll County, Maryland
→1999Chance Boatyard — Annapolis, Anne Arundel County, Maryland
→1994Chanceford — Snow Hill, Worcester County, Maryland
→2005Chapel Hill Historic District — Cumberland, Allegany County, Maryland
→2000Chapel of the Incarnation — Brandywine, Prince George's County, Maryland
→1976Chapline, William, House — Sharpsburg, Washington County, Maryland
→1988Charlcote House — Baltimore (Independent City), Baltimore County, Maryland
→1983Charles Village-Abell Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1975Charlestown Historic District — Charlestown, Cecil County, Maryland
→1975Charlotte Hall Historic District — Hughesville, St. Mary's County, Maryland
→1970Chase-Lloyd House ★ NHL — Annapolis, Anne Arundel County, Maryland
→1980Chautauqua Tower — Glen Echo, Montgomery County, Maryland
→2007Cherry Grove, HO-1 — Woodbine, Howard County, Maryland
→1980CHESAPEAKE (lightship) ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1980CHESAPEAKE BAY BROGAN MUSTANG — Annapolis, Anne Arundel County, Maryland
→1980Chesapeake Beach Railway Station — Chesapeake Beach, Calvert County, Maryland
→1980Chester Hall — Chestertown, Queen Anne's County, Maryland
→1985Chestertown Armory — Chestertown, Kent County, Maryland
→1970Chestertown Historic District ★ NHL — Chestertown, Kent County, Maryland
→1984Chestertown Historic District (Boundary Increase) — Chestertown, Kent County, Maryland
→1982Chestertown Railroad Station — Chestertown, Kent County, Maryland
→1979Chesterville Brick House — Chesterville, Kent County, Maryland
→1983Chestnut Ridge — Aberdeen, Harford County, Maryland
→1986Childs Residence — Millersville, Anne Arundel County, Maryland
→1974Chiswell's Inheritance — Poolesville, Montgomery County, Maryland
→1978Chizuk Amuno Synagogue — Baltimore (Independent City), Baltimore County, Maryland
→1989Choate House — Randallstown, Baltimore County, Maryland
→1973Christ Church — Owensville, Anne Arundel County, Maryland
→1979Christ Church — Stevensville, Queen Anne's County, Maryland
→1975Christ Church — Port Republic, Calvert County, Maryland
→1978Christ Church Guilford — Guilford, Howard County, Maryland
→1980Christ Church, Graveyard and Sexton's House — Worton, Kent County, Maryland
→1994Christ Episcopal Church — Chaptico, St. Mary's County, Maryland
→1984Christ Episcopal Church and Cemetery — Cambridge, Dorchester County, Maryland
→2002Church of the Holy Trinity — Churchville, Harford County, Maryland
→2000Churchill Threatre--Community Building — Church Hill, Queen Anne's County, Maryland
→1986Churchman, John, House — Calvert, Cecil County, Maryland
→1986Churchville Presbyterian Church — Churchville, Harford County, Maryland
→2013Citizens State Bank — Odenton, Anne Arundel County, Maryland
→1973City Hall — Cumberland, Allegany County, Maryland
→2011Clagett House at Cool Spring Manor — Upper Marlboro, Prince George's County, Maryland
→1999Clagett, Robert, Farm — Knoxville, Washington County, Maryland
→1966Clara Barton National Historic Site ★ NHL — Glen Echo, Montgomery County, Maryland
→1985CLARENCE CROCKETT — Wenona, Somerset County, Maryland
→1975Clark's Conveniency — Pomona, Kent County, Maryland
→1996Clarke, Littleton T., House — Pocomoke City, Worcester County, Maryland
→1975Clarksburg School — Clarksburg, Montgomery County, Maryland
→1985CLAUDE W. SOMERS — Clairborne, Talbot County, Maryland
→1979Clay's Hope — Bellevue, Talbot County, Maryland
→1974Clifton — Ednor, Montgomery County, Maryland
→2021Clifton Park — Baltimore (Independent City), Baltimore County, Maryland
→1971Clifton Park Valve House — Baltimore (Independent City), Baltimore County, Maryland
→1982Clifton School — Baltimore (Independent City), Baltimore County, Maryland
→1979Cloisters, The — Lutherville, Baltimore County, Maryland
→1982Clover Hill — Brookeville, Montgomery County, Maryland
→2001Coca-Cola Baltimore Branch Factory — Baltimore (Independent City), Baltimore County, Maryland
→2013Coca-Cola Bottling Company of Baltimore Building — Baltimore (Independent City), Baltimore County, Maryland
→2018Cockey-Jamison-Hendrickson House and Store — Urbana, Frederick County, Maryland
→1987Coffren, John W., House and Store — Croom, Prince George's County, Maryland
→2008Cold Saturday — Finksburg, Carroll County, Maryland
→2013Coldstream Homestead Montebello Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1987Coleman, Robert W., School — Baltimore (Independent City), Baltimore County, Maryland
→2012College Heights Estates Historic District — University Park, Prince George's County, Maryland
→1997College of Medicine of Maryland ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1977College Park Airport — College Park, Prince George's County, Maryland
→2000Collins, Jackson, House — Centreville, Queen Anne's County, Maryland
→1966Colonial Annapolis Historic District ★ NHL — Annapolis, Anne Arundel County, Maryland
→1984Colonial Annapolis Historic District (Boundary Increase) — Annapolis, Anne Arundel County, Maryland
→1978Colonial Theatre — Hagerstown, Washington County, Maryland
→1977Colora Meetinghouse — Colora, Cecil County, Maryland
→2018Commercial Credit Company Building — Baltimore (Independent City), Baltimore County, Maryland
→1974Compton — Trappe, Talbot County, Maryland
→1983Compton Bassett — Upper Marlboro, Prince George's County, Maryland
→1982Concord — District Heights, Prince George's County, Maryland
→1978Content — Upper Marlboro, Prince George's County, Maryland
→1986Content — Centreville, Queen Anne's County, Maryland
→1983Continental Trust Company Building — Baltimore (Independent City), Baltimore County, Maryland
→2018Cool Hollow Home — Hagerstown, Washington County, Maryland
→1985Corbett Historic District — Monkton, Baltimore County, Maryland
→1972Cornehill — Parran, Calvert County, Maryland
→1975Costen House — Pocomoke, Worcester County, Maryland
→1989Cottage, The — Upper Marlboro, Prince George's County, Maryland
→1973Cove Point Lighthouse — Cove Point, Calvert County, Maryland
→1984Coventry Parish Ruins — Rehobeth, Somerset County, Maryland
→2019Cover's Tannery — Keymar, Carroll County, Maryland
→2017Craig, Captain Robert S., Cottage — Ocean City, Worcester County, Maryland
→2002Craighill Channel Lower Range Front Light Station — Baltimore, Baltimore County, Maryland
→2011Crampton's Gap Historic District — Burkittsville, Frederick County, Maryland
→1983Cray House — Stevensville, Queen Anne's County, Maryland
→1973Creagh, Patrick, House — Annapolis, Anne Arundel County, Maryland
→1984Creedmore — Mountain Lake Park, Garrett County, Maryland
→1972Cresap, Michael, House — Oldtown, Allegany County, Maryland
→1985Crisfield Armory — Crisfield, Somerset County, Maryland
→1990Crisfield Historic District — Crisfield, Somerset County, Maryland
→1996Crockett House — Pocomoke City, Worcester County, Maryland
→1974Crooked Intention — St. Michaels, Talbot County, Maryland
→1988Cross Manor — St. Inigoes, St. Mary's County, Maryland
→1983Cross Roads Church — Millersville, Anne Arundel County, Maryland
→1978Crum Road Bridge — Walkersville, Frederick County, Maryland
→2009Cullen Homestead Historic District — Crisfield, Somerset County, Maryland
→1990Cullen, Victor, Center, Old Administration Building — Sabillasville, Frederick County, Maryland
→1987Cullen, Victor, School Power House — Sabillasville, Frederick County, Maryland
→1997Cumberland YMCA — Cumberland, Allegany County, Maryland
→1979Cummins Memorial Church — Baltimore (Independent City), Baltimore County, Maryland
→2006Curtis--Shipley Farmstead — Ellicott City, Howard County, Maryland
→2002Cut-Off Channel Range Front Light Station — Fort Howard, Baltimore County, Maryland
→2002Cut-off Channel Range Rear Light Station — Edgemore, Baltimore County, Maryland
→1972Cylburn House and Park District — Baltimore (Independent City), Baltimore County, Maryland
→1973D. H. Springhouse — Bel Air, Harford County, Maryland
→1975Daffin House — Hillsboro, Caroline County, Maryland
→1979Dale's Right — Cambridge, Dorchester County, Maryland
→1973Daniels Mill — Daniels, Howard County, Maryland
→1987Darlington Historic District — Darlington, Harford County, Maryland
→1979Darnall Place — Poolesville, Montgomery County, Maryland
→1974Davidge Hall, University of Maryland — Baltimore (Independent City), Baltimore County, Maryland
→1992Davidsonville Historic District — Davidsonville, Anne Arundel County, Maryland
→2001Davis--Warner House — Takoma Park, Montgomery County, Maryland
→1985Dawson Farm — Rockville, Montgomery County, Maryland
→2015De La Brooke Tobacco Barn — Oraville, St. Mary's County, Maryland
→2006Deal Island Historic District — Deal Island, Somerset County, Maryland
→2005Decatur Heights Historic District — Cumberland, Allegany County, Maryland
→1975Deep Falls — Chaptico, St. Mary's County, Maryland
→1980Deer Creek Friends Meetinghouse — Darlington, Harford County, Maryland
→1985Denton Armory — Denton, Caroline County, Maryland
→1983Denton Historic District — Denton, Caroline County, Maryland
→1971Denton House — Chestertown, Kent County, Maryland
→1980Dibb House — Bel Air, Harford County, Maryland
→1972Dickeyville Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1976Ditto Knolls — Hagerstown, Washington County, Maryland
→2003Donnelly, Daniel, House — Williamsport, Washington County, Maryland
→1982Dorchester County Courthouse and Jail — Cambridge, Dorchester County, Maryland
→1979Dorguth Memorial United Methodist Church — Baltimore (Independent City), Baltimore County, Maryland
→2001Dorsey Hall — Columbia, Howard County, Maryland
→1978Dorsey-Palmer House — Hagerstown, Washington County, Maryland
→1978Doub Farm — Keedysville, Washington County, Maryland
→1979Doub's Mill Historic District — Beaver Creek, Washington County, Maryland
→1971Doughoregan Manor ★ NHL — Ellicott City, Howard County, Maryland
→1983Douglass Place — Baltimore (Independent City), Baltimore County, Maryland
→1992Douglass Summer House — Highland Beach, Anne Arundel County, Maryland
→1989Douglass, Frederick, High School — Baltimore (Independent City), Baltimore County, Maryland
→1988Dowden's Luck — Poolesville, Montgomery County, Maryland
→1983Downtown Cumberland Historic District — Cumberland, Allegany County, Maryland
→1985Drane, James, House — Accident, Garrett County, Maryland
→1973Drum Point Lighthouse — Solomons Island, Calvert County, Maryland
→1987Drummine Farm — New Market, Frederick County, Maryland
→1986Drury--Austin House — Boyds, Montgomery County, Maryland
→1979Dudley's Chapel — Sudlersville, Queen Anne's County, Maryland
→2009Dumbarton Historic District — Pikesville, Baltimore County, Maryland
→1983Dundalk Historic District — Dundalk, Baltimore County, Maryland
→2011Dundalk--Liberty--Cornwall Gardens — Dundalk, Baltimore County, Maryland
→1985E.C. COLLIER — Tilghman, Talbot County, Maryland
→1974Eagle's Nest — Phoenix, Baltimore County, Maryland
→2012Early Family Historic District — Brandywine, Prince George's County, Maryland
→1988Early, William W., House — Brandywine, Prince George's County, Maryland
→2006East Baltimore Historic District, Old — Baltimore (Independent City), Baltimore County, Maryland
→2009East Monument Historic District — Baltimore, Baltimore County, Maryland
→1975East New Market Historic District — East New Market, Dorchester County, Maryland
→1977East Nottingham Friends Meetinghouse — Rising Sun, Cecil County, Maryland
→1971Eastern Female High School — Baltimore (Independent City), Baltimore County, Maryland
→2000Eastern High School — Baltimore (Independent City), Baltimore County, Maryland
→1980Easton Historic District — Easton, Talbot County, Maryland
→2015Edgewood — Frederick, Frederick County, Maryland
→1985EDMEE S. (log canoe) — St. Michaels, Talbot County, Maryland
→2010Edmondson Avenue Historic District — Baltimore, Baltimore County, Maryland
→1986EDNA E. LOCKWOOD (Chesapeake Bay bugeye) ★ NHL — St. Michaels, Talbot County, Maryland
→2004Ednor Gardens Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1980ELF, THE (yacht) — Fredericktown, Cecil County, Maryland
→1984Elk Landing — Elkton, Cecil County, Maryland
→1990Elkridge Furnace Complex — Elkridge, Howard County, Maryland
→1985Elkton Armory — Elkton, Cecil County, Maryland
→1979Ellerslie — Port Tobacco, Charles County, Maryland
→1978Ellicott City Jail — Ellicott City, Howard County, Maryland
→1968Ellicott City Station ★ NHL — Ellicott City, Howard County, Maryland
→1976Ellicott's Mills Historic District — Oella, Baltimore County, Maryland
→1975Elliot-Bester House — Hagerstown, Washington County, Maryland
→1978Elmonte — Ellicott City, Howard County, Maryland
→2012Elmwood — Williamsport, Washington County, Maryland
→1985ELSWORTH — Tilghman, Talbot County, Maryland
→1980Embert, John, Farm — Millington, Queen Anne's County, Maryland
→1973Emerson Bromo-Seltzer Tower — Baltimore (Independent City), Baltimore County, Maryland
→1992Emmitsburg Historic District — Emmitsburg, Frederick County, Maryland
→1973Engine House No. 6 — Baltimore (Independent City), Baltimore County, Maryland
→1995Engine House No. 8 — Baltimore (Independent City), Baltimore County, Maryland
→1980England, Isaac, House — Zion, Cecil County, Maryland
→2003Englar--Scweigart--Rinehart Farm — Westminster, Carroll County, Maryland
→1986Enniscorthy — Ellicott City, Howard County, Maryland
→2001Epiphany Chapel and Church House — Odenton, Anne Arundel County, Maryland
→2003Equitable Gas Works — Baltimore (Independent City), Baltimore County, Maryland
→1985Erb, Christopher, House — Silver Run, Carroll County, Maryland
→1980Erlanger Buildings — Baltimore (Independent City), Baltimore County, Maryland
→2022Etowah — Harwood, Anne Arundel County, Maryland
→1983Eutaw-Madison Apartment House Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1969Evergreen — Owensville, Anne Arundel County, Maryland
→1983Evergreen House — Baltimore (Independent City), Baltimore County, Maryland
→1975Evergreen on the Falls — Baltimore (Independent City), Baltimore County, Maryland
→1984Exchange, The — La Plata, Charles County, Maryland
→1978Exeter — Federalsburg, Caroline County, Maryland
→2006Eyler, John, Farmstead — Thurmont, Frederick County, Maryland
→1985F. C. LEWIS, JR — Wenona, Somerset County, Maryland
→1980Fair Meadows — Creswell, Harford County, Maryland
→1973Fairlee Manor Camp House — Fairlee, Kent County, Maryland
→2011Fairmont Heights Historic District — Fairmount Heights, Prince George's County, Maryland
→1985FANNIE L. DAUGHERTY — Wenona, Somerset County, Maryland
→1975Farm Content — Westminster, Carroll County, Maryland
→1996Fassitt House — Berlin, Worcester County, Maryland
→1979Fat Oxen — Urban, Frederick County, Maryland
→1994Faust Brothers Building — Baltimore (Independent City), Baltimore County, Maryland
→1970Federal Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2003Federal Hill South Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1983Federal Reserve Bank of Richmond, Baltimore Branch — Baltimore (Independent City), Baltimore County, Maryland
→1969Fells Point Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1986Fells Point Historic District (Boundary Increase) — Baltimore (Independent City), Baltimore County, Maryland
→2003Female Seminary — Centreville, Queen Anne's County, Maryland
→2002Fiery, Joseph, House — Clear Spring, Washington County, Maryland
→1985Fifth Regiment Armory — Baltimore (Independent City), Baltimore County, Maryland
→1989Finney Houses Historic District — Churchville, Harford County, Maryland
→2007First Avenue School — Glen Burnie, Anne Arundel County, Maryland
→1980First Baptist Church — Cumberland, Allegany County, Maryland
→1982First Church of Christ, Scientist — Baltimore (Independent City), Baltimore County, Maryland
→1973First Presbyterian Church and Manse — Baltimore (Independent City), Baltimore County, Maryland
→1972First Unitarian Church ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1969Flag House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1985FLYING CLOUD (log canoe) — Wittman, Talbot County, Maryland
→2013Footer's Dye Works — Cumberland, Allegany County, Maryland
→2017Forest View — Marriottsville, Howard County, Maryland
→2015Fort Carroll — Curtis Bay, Baltimore County, Maryland
→1973Fort Frederick State Park ★ NHL — Big Pool, Washington County, Maryland
→1971Fort Garrison — Stevenson, Baltimore County, Maryland
→1966Fort McHenry National Monument and Historic Shrine — Baltimore (Independent City), Baltimore County, Maryland
→1966Fort Washington — Washington, Prince George's County, Maryland
→1978Fourpoints Bridge — Emmitsburg, Frederick County, Maryland
→1995Frank, L., & Son Building — Baltimore (Independent City), Baltimore County, Maryland
→1982Franklin Square Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1971Franklin Street Presbyterian Church and Parsonage — Baltimore (Independent City), Baltimore County, Maryland
→2001Franklintown Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1985Frederick Armory — Frederick, Frederick County, Maryland
→1973Frederick Historic District — Frederick, Frederick County, Maryland
→1988Frederick Historic District (Boundary Increase) — Frederick, Frederick County, Maryland
→2007Freetown Rosenwald School — Glen Burnie, Anne Arundel County, Maryland
→1992Friends Advice — Boyds, Montgomery County, Maryland
→2005Friends Burial Ground — Baltimore (Independent City), Baltimore County, Maryland
→1994Friendship — Stevensville, Queen Anne's County, Maryland
→1973Friendship Hall — East New Market, Dorchester County, Maryland
→1996Friendship United Methodist Church, Old — West Post Office, Worcester County, Maryland
→1977Friendship Valley Farm — Westminster, Carroll County, Maryland
→1986Frizzell, Andrew P., House and Farm Complex — Westminster, Carroll County, Maryland
→1983Frostburg Historic District — Frostburg, Allegany County, Maryland
→1971Fuller-Baker Log House — Grantsville, Garrett County, Maryland
→2010Funk, Jacob M., Farm — Hagerstown, Washington County, Maryland
→2000Funkstown Historic District — Funkstown, Washington County, Maryland
→1978Gaithersburg B & O Railroad Station and Freight Shed — Gaithersburg, Montgomery County, Maryland
→1985Gaithersburg Latitude Observatory ★ NHL — Gaithersburg, Montgomery County, Maryland
→1983Gallagher Mansion and Outbuilding — Baltimore (Independent City), Baltimore County, Maryland
→1985Gambrill House — Frederick, Frederick County, Maryland
→1984Gandy Belting Company Building — Baltimore (Independent City), Baltimore County, Maryland
→2002Garden Hill — Hagerstown, Washington County, Maryland
→1982Garrett Building — Baltimore (Independent City), Baltimore County, Maryland
→1975Garrett County Courthouse — Oakland, Garrett County, Maryland
→1975Garrett Park Historic District — Garrett Park, Montgomery County, Maryland
→2003Gay Street Historic District — Baltimore, Baltimore County, Maryland
→1977Geeting Farm — Keedysville, Washington County, Maryland
→1971Genesar — Berlin, Worcester County, Maryland
→1972Gillis-Grier House — Salisbury, Wicomico County, Maryland
→2008Gilpin's Falls Covered Bridge — North East, Cecil County, Maryland
→1993Gladden Farm — Street, Harford County, Maryland
→1984Glamorgan — Deer Park, Garrett County, Maryland
→1976Glasgow — Cambridge, Dorchester County, Maryland
→2009Glebe House — Princess Anne, Somerset County, Maryland
→1984Glen Echo Park Historic District — Glen Echo, Montgomery County, Maryland
→1983Glen Oak Hotel — Hurlock, Dorchester County, Maryland
→1983Glencoe — Glencoe, Baltimore County, Maryland
→1983Glenelg Manor — Glenelg, Howard County, Maryland
→2011Glenn Dale Tuberculosis Hospital and Sanatorium — Glenn Dale, Prince George's County, Maryland
→2007Glenview Farm — Rockville, Montgomery County, Maryland
→1973Glyndon Historic District — Glyndon and, Baltimore County, Maryland
→2009Gobbler Hill — Chestertown, Kent County, Maryland
→1972Godlington Manor — Chestertown, Kent County, Maryland
→1988Goldsborough House — Cambridge, Dorchester County, Maryland
→1985Gompers School — Baltimore (Independent City), Baltimore County, Maryland
→1999Good--Hartle Farm — Hagerstown, Washington County, Maryland
→2002Good--Reilly House — Sharpsburg, Washington County, Maryland
→1988Goodloe, Don S. S., House — Bowie, Prince George's County, Maryland
→2007Goucher College — Towson, Baltimore County, Maryland
→1994Goucher College Historic District, Old (Boundary Increase) — Baltimore (Independent City), Baltimore County, Maryland
→1990Grace Episcopal Church — Mt. Vernon, Somerset County, Maryland
→1979Grace Episcopal Church Complex — Taylor's Island, Dorchester County, Maryland
→2001Grace--Hampden Methodist Episcopal Church — Baltimore (Independent City), Baltimore County, Maryland
→1976Graceham Moravian Church And Parsonage — Thurmont, Frederick County, Maryland
→1980Graham-Crocker House — Bel Air, Harford County, Maryland
→1972Grahame House — Lower Marlboro, Calvert County, Maryland
→2002Graighill Channel Lower Range Rear Light Station — Edgemere, Baltimore County, Maryland
→1994Granite Historic District — Granite, Baltimore County, Maryland
→1984Grassland — Annapolis Junction, Anne Arundel County, Maryland
→1986Gray Gables — Darlington, Harford County, Maryland
→2007Graystone Lodge — Bel Air, Harford County, Maryland
→1984Great House — St. Augustine, Cecil County, Maryland
→2001Greater Homeland Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1980Green Mount Cemetery — Baltimore (Independent City), Baltimore County, Maryland
→1980Green Spring Valley Historic District — Stevenson and, Baltimore County, Maryland
→1977Green's Inheritance — Pomfret, Charles County, Maryland
→1980Greenbelt Historic District ★ NHL — Greenbelt, Prince George's County, Maryland
→2005Greene Street Historic District — Cumberland, Allegany County, Maryland
→1972Greenfields — Cecilton, Cecil County, Maryland
→1984Gresham — Edgewater, Anne Arundel County, Maryland
→2007Grief, L. and Bro., Inc. Manufactory — Baltimore (Independent City), Baltimore County, Maryland
→1978Griffith House — Aberdeen, Harford County, Maryland
→1998Grossnickel, Peter of P., Farm — Myersville, Frederick County, Maryland
→1975Guilford — Frederick, Frederick County, Maryland
→2001Guilford Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2021Guilford Quarry Pratt Through Truss Bridge — Guilford, Howard County, Maryland
→2002Gunn, Samuel, House — Snow Hill, Worcester County, Maryland
→1974Gunpowder Meetinghouse — Aberdeen Proving Ground, Harford County, Maryland
→2002Gunther Brewing Company — Baltimore (Independent City), Baltimore County, Maryland
→1972Habre-de-Venture; Thomas Stone National Historic Site ★ NHL — Port Tobacco, Charles County, Maryland
→1974Hager House — Hagerstown, Washington County, Maryland
→2002Hagerman, William, Farmstead — Sharpsburg, Washington County, Maryland
→1985Hagerstown Armory — Hagerstown, Washington County, Maryland
→1982Hagerstown Charity School — Hagerstown, Washington County, Maryland
→1990Hagerstown City Park Historic District — Hagerstown, Washington County, Maryland
→1983Hagerstown Commercial Core Historic District — Hagerstown, Washington County, Maryland
→1994Hagerstown Historic District — Hagerstown, Washington County, Maryland
→1982Haley, Francis, House — Cumberland, Allegany County, Maryland
→1980Half-Way House — Parkton, Baltimore County, Maryland
→1989Half-Way House (Boundary Increase) — Parkton, Baltimore County, Maryland
→1988Hamilton, James, House — Mitchellville, Prince George's County, Maryland
→2004Hammond Wood Historic District — Silver Spring, Montgomery County, Maryland
→1966Hammond-Harwood House ★ NHL — Annapolis, Anne Arundel County, Maryland
→2004Hampden Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2002Hampstead School — Hampstead, Carroll County, Maryland
→1966Hampton National Historic Site — Towson, Baltimore County, Maryland
→1975Hancock's Resolution — Pasadena, Anne Arundel County, Maryland
→2008Handsell — Vienna, Dorchester County, Maryland
→1980Hanover Farm House — Beallsville, Montgomery County, Maryland
→1978Hard Lodging — Union Bridge, Carroll County, Maryland
→1990Harford Furnace Historic District — Bel Air, Harford County, Maryland
→1980Harford National Bank — Bel Air, Harford County, Maryland
→1980Harmony Hall — Oxon Hill, Prince George's County, Maryland
→1982Harper, George, Store — Still Pond, Kent County, Maryland
→1975Harrington — Princess Anne, Somerset County, Maryland
→1994Harris Farm — Walkersville, Frederick County, Maryland
→1984Harris, Nathan and Susannah, House — Harrisville, Cecil County, Maryland
→2000Haviland, Edward W., House — Port Deposit, Cecil County, Maryland
→1982Havre de Grace Historic District — Havre de Grace, Harford County, Maryland
→1976Havre de Grace Lighthouse — Havre de Grace, Harford County, Maryland
→1984Hawkins Pharsalia — Ruthsburg, Queen Anne's County, Maryland
→1990Hayman, Jeptha, House — Kingston, Somerset County, Maryland
→1980Hays House — Bel Air, Harford County, Maryland
→1972Hays-Heighe House — Bel Air, Harford County, Maryland
→2006Hays, Joseph C., House — Sharpsburg, Washington County, Maryland
→1976Hayward's Lott — Pocomoke City, Somerset County, Maryland
→1999Hazelwood — Upper Marlboro, Prince George's County, Maryland
→2010Hebrew Orphan Asylum — Baltimore, Baltimore County, Maryland
→1978Hebron — Stillpond, Kent County, Maryland
→1990Heighe House — Bel Air, Harford County, Maryland
→1980Heiser, Rosenfeld, and Strauss Buildings — Baltimore (Independent City), Baltimore County, Maryland
→1984HELIANTHUS III (yacht) — Annapolis, Anne Arundel County, Maryland
→2007Hendler Creamery — Baltimore (Independent City), Baltimore County, Maryland
→1984Henry's Grove — Berlin, Worcester County, Maryland
→1998Hermitage, The — La Plata, Charles County, Maryland
→1971Hessian Barracks — Frederick, Frederick County, Maryland
→1983Hidden Valley Farm — Baldwin, Harford County, Maryland
→2002Highbarger, Jacob, House — Sharpsburg, Washington County, Maryland
→2007Highfield House — Baltimore (Independent City), Baltimore County, Maryland
→1998Highland Lodge — Frederick, Frederick County, Maryland
→1985HILDA M. WILLING ★ NHL — Tilghman, Talbot County, Maryland
→1986Hill House — Parkton, Baltimore County, Maryland
→1978Hilleary, William, House — Bladensburg, Prince George's County, Maryland
→2000Hills, Dales, and the Vineyard — Keedysville, Washington County, Maryland
→2007Hilltop Manor — Bladensburg, Prince George's County, Maryland
→1980Hilton — Catonsville, Baltimore County, Maryland
→1975Hinchingham — Rock Hall, Kent County, Maryland
→2000Hippodrome Theatre — Baltimore (Independent City), Baltimore County, Maryland
→1970His Lordship's Kindness ★ NHL — Rosaryville, Prince George's County, Maryland
→1979Hitt's Mill and Houses — Keedysville, Washington County, Maryland
→1984Hobson's Choice — Woodbine, Howard County, Maryland
→2003Hochschild, Kohn Belvedere and Hess Shoes — Baltimore (Independent City), Baltimore County, Maryland
→1982Hocking House — Frostburg, Allegany County, Maryland
→1997Hoffman Farm — Keedysville, Washington County, Maryland
→1985Hoffman, Isaac, House — Houcksville, Carroll County, Maryland
→1980Hogmire-Berryman Farm — Spielman, Washington County, Maryland
→2009Hollins-Roundhouse Historic District — Baltimore, Baltimore County, Maryland
→1976Holly Hall — Elkton, Cecil County, Maryland
→1971Holly Hill — Friendship, Anne Arundel County, Maryland
→2002Holy Cross Roman Catholic Church — Baltimore (Independent City), Baltimore County, Maryland
→2003Home of the Friendless — Baltimore (Independent City), Baltimore County, Maryland
→1971Homewood ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1996Honeysuckle Lodge — Salisbury, Wicomico County, Maryland
→2002Hood College Historic District — Frederick, Frederick County, Maryland
→2002Hooper Island Light Station — Hooperville, Dorchester County, Maryland
→1982Hooper, James E., House — Baltimore (Independent City), Baltimore County, Maryland
→1979Hope House — Easton, Talbot County, Maryland
→2015Hopeful Unity — Worton, Kent County, Maryland
→1979Hopewell — Providence, Cecil County, Maryland
→1980Hopewell — Union Bridge, Carroll County, Maryland
→1999Hotel Kernan — Baltimore (Independent City), Baltimore County, Maryland
→1979House at 9 North Front Street — Baltimore (Independent City), Baltimore County, Maryland
→1973House by the "Town Gates" — Annapolis, Anne Arundel County, Maryland
→1977Houses At 16--22 East Lee Street — Hagerstown, Washington County, Maryland
→1985HOWARD (Skipjack) — Wenona, Somerset County, Maryland
→2012Howard Lodge — Sykesville, Howard County, Maryland
→2000Howard Park P.S. 218 — Baltimore (Independent City), Baltimore County, Maryland
→1973Howard Street Tunnel — Baltimore (Independent City), Baltimore County, Maryland
→1998Howard's Inheritance — Annapolis, Anne Arundel County, Maryland
→1990Huckleberry Hall — Leitersburg, Washington County, Maryland
→2018Hughes A.M.E. Chapel — Cambridge, Dorchester County, Maryland
→1977Hull Memorial Christian Church — Lansdowne, Baltimore County, Maryland
→1984Hutzler Brothers Palace Building — Baltimore (Independent City), Baltimore County, Maryland
→1980Hyattsville Armory — Hyattsville, Prince George's County, Maryland
→1982Hyattsville Historic District — Hyattsville, Prince George's County, Maryland
→2004Hyattsville Historic District (Boundary Increase) — Hyattsville, Prince George's County, Maryland
→1985IDA MAY — Chance, Somerset County, Maryland
→1973Iglehart — Iglehart, Anne Arundel County, Maryland
→1975Indian Queen Tavern and Black's Store — Charlestown, Cecil County, Maryland
→1986Indian Range — Davidsonville, Anne Arundel County, Maryland
→1980Industrial Building — Baltimore (Independent City), Baltimore County, Maryland
→1979Ingram-Schipper Farm — Boonsboro, Washington County, Maryland
→1976Inns on the National Road — Cumberland, Allegany County, Maryland
→1979ISLAND BELLE — Smith Island, Somerset County, Maryland
→1985ISLAND BIRD (log canoe) — St. Michaels, Talbot County, Maryland
→1985ISLAND BLOSSOM (log canoe) — St. Michaels, Talbot County, Maryland
→1985ISLAND IMAGE (log canoe) — Chestertown, Kent County, Maryland
→1985ISLAND LARK (log canoe) — St. Michaels, Talbot County, Maryland
→1997Ivory Mills — White Hall, Harford County, Maryland
→1976Jackson, Sen. William P., House — Salisbury, Wicomico County, Maryland
→1985JAY DEE (log canoe) — St. Michaels, Talbot County, Maryland
→1980Jena — Oxford, Talbot County, Maryland
→1978Jericho Covered Bridge — Kingsville, Baltimore County, Maryland
→1984Jericho Farm — Kingsville, Baltimore County, Maryland
→1987Jerusalem Mill Village — Jerusalem, Harford County, Maryland
→1973John Brown's Headquarters ★ NHL — Samples Manor, Washington County, Maryland
→2005John T. Williams Hall — Princess Anne, Somerset County, Maryland
→1975Johns Hopkins Hospital Complex — Baltimore (Independent City), Baltimore County, Maryland
→2003Johnson--Wolfe Farm — Comus, Montgomery County, Maryland
→2011Johnsontown Tobacco Barn No. 2 — La Plata, Charles County, Maryland
→1994Johnston Building — Baltimore (Independent City), Baltimore County, Maryland
→1973Jones, Abraham, House — Libertytown, Frederick County, Maryland
→1982Joshua's Meadows — Bel Air, Harford County, Maryland
→1984Kaese Mill — Accident, Garrett County, Maryland
→1985KATHRYN — Tilghman, Talbot County, Maryland
→1994KATHRYN (Chesapeake Skipjack) ★ NHL — Tilghman Island, Talbot County, Maryland
→1999Keating House — Centreville, Queen Anne's County, Maryland
→1974Keedy House — Boonsboro, Washington County, Maryland
→2001Keedysville Historic District — Keedysville, Washington County, Maryland
→2007Keefer--Brubaker Farm — Taneytown, Carroll County, Maryland
→2005Kefauver Place — Rohrersville, Washington County, Maryland
→1983Kennersley — Church Hill, Queen Anne's County, Maryland
→1980Kensington Historic District — Kensington, Montgomery County, Maryland
→1979Kernan, James Lawrence, Hospital — Baltimore (Independent City), Baltimore County, Maryland
→1978Kingston — Upper Marlboro, Prince George's County, Maryland
→1974Kingston Hall — Kingston, Somerset County, Maryland
→1982Kirk, Elisha, House — Calvert, Cecil County, Maryland
→2005Kitterman--Buckey Farm — Johnsville, Frederick County, Maryland
→2010Klots Throwing Company Mill — Cumberland, Allegany County, Maryland
→1994Knipp, George, & Brother Building — Baltimore (Independent City), Baltimore County, Maryland
→1976Knocks Folly — Kennedyville, Kent County, Maryland
→1982Koon, Thomas, House — Cumberland, Allegany County, Maryland
→2011Koons, Jacob, Farm — Taneytown, Carroll County, Maryland
→2008Krieger, Seymour, House — Bethesda, Montgomery County, Maryland
→1982Krug Iron Works — Baltimore (Independent City), Baltimore County, Maryland
→1976La Grange — La Plata, Charles County, Maryland
→1971La Vale Tollgate House — La Vale, Allegany County, Maryland
→1973La Veille — Mutual, Calvert County, Maryland
→1976Ladew Topiary Gardens and House — Taylor, Harford County, Maryland
→1980LaGrange — Cambridge, Dorchester County, Maryland
→2001Lake Drive Apartments — Baltimore (Independent City), Baltimore County, Maryland
→1992Lake Roland Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2003Lake--Evesham Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2008Langley Park — Langley Park, Prince George's County, Maryland
→1984Lankford House — Marion, Somerset County, Maryland
→1984Lansdowne — Centreville, Queen Anne's County, Maryland
→1998Lantz--Zeigler House — Hagerstown, Washington County, Maryland
→1969Larkin's Hill Farm — Harwood, Anne Arundel County, Maryland
→1969Larkin's Hundred — Harwood, Anne Arundel County, Maryland
→2001Lauraville Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1979Laurel High School — Laurel, Prince George's County, Maryland
→1973Laurel Railroad Station — Laurel, Prince George's County, Maryland
→1997Lauretum — Chestertown, Kent County, Maryland
→1984Lawn, The — Elkridge, Howard County, Maryland
→1993Lawyers Hill Historic District — Elkridge, Howard County, Maryland
→1975Layton House — Laytonsville, Montgomery County, Maryland
→1979Leadenhall Street Baptist Church — Baltimore (Independent City), Baltimore County, Maryland
→2003Legg's Dependence — Stevensville, Queen Anne's County, Maryland
→1978LeGore Bridge — Woodsboro, Frederick County, Maryland
→1991Lehman's Mill Historic District — Hagerstown, Washington County, Maryland
→2003Leitersburg Historic District — Leitersburg, Washington County, Maryland
→1988Leonard House — Greensboro, Caroline County, Maryland
→2009Leverton, Jacob and Hannah, House — Preston, Caroline County, Maryland
→1982Lewis Mill Complex — Jefferson, Frederick County, Maryland
→1990Lexon — Centreville, Queen Anne's County, Maryland
→1976Liberty Hall — Westover, Somerset County, Maryland
→2019Lime Kiln Bottom — Parkville, Baltimore County, Maryland
→2009Linchester Mill — Preston, Caroline County, Maryland
→2000Linden — Prince Frederick, Calvert County, Maryland
→1977Linden — Port Tobacco, Charles County, Maryland
→1987Linden Grove — Frederick, Frederick County, Maryland
→1990Lindens, The — Bryantown, Charles County, Maryland
→1996Lineboro Historic District — Lineboro, Carroll County, Maryland
→2000Linganore Farm — Frederick, Frederick County, Maryland
→2006Linnwood — Ellicott City, Howard County, Maryland
→2006Linthicum Heights Historic District — Linthicum, Anne Arundel County, Maryland
→1984Linthicum Walks — Crofton, Anne Arundel County, Maryland
→1980Linwood Historic District — Linwood, Carroll County, Maryland
→2006Lion Brothers Company Building — Baltimore (Independent City), Baltimore County, Maryland
→1980Liriodendron — Bel Air, Harford County, Maryland
→1979Little Elk Farm — Providence, Cecil County, Maryland
→1980Little Falls Meetinghouse — Fallston, Harford County, Maryland
→1982Little Montgomery Street Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2002Llandaff House — Easton, Talbot County, Maryland
→1978Lloyd Street Synagogue — Baltimore (Independent City), Baltimore County, Maryland
→1972Loats Female Orphan Asylum of Frederick City — Frederick, Frederick County, Maryland
→1978Locust Grove — La Plata, Charles County, Maryland
→2012Locust Point Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1985Loft Historic District North — Baltimore (Independent City), Baltimore County, Maryland
→1985Loft Historic District South — Baltimore (Independent City), Baltimore County, Maryland
→1972Lombard Street Bridge — Baltimore (Independent City), Baltimore County, Maryland
→1973Lonaconing Furnace — Lonaconing, Allegany County, Maryland
→1983Lonaconing Historic District — Lonaconing, Allegany County, Maryland
→1970London Town Publik House ★ NHL — Woodland Beach, Anne Arundel County, Maryland
→1973Londontown Manufacturing Company, Inc. — Baltimore (Independent City), Baltimore County, Maryland
→1982Long Green Valley Historic District — Baldwin, Baltimore County, Maryland
→1974Long Hill — Wetipquin, Wicomico County, Maryland
→2010Long Island Farm — Parkville, Baltimore County, Maryland
→1978Long Meadows — Hagerstown, Washington County, Maryland
→1982Lord Baltimore Hotel — Baltimore (Independent City), Baltimore County, Maryland
→1984Lore, J. C., Oyster House ★ NHL — Solomons, Calvert County, Maryland
→1985Lorraine Park Cemetery Gate Lodge — Woodlawn, Baltimore County, Maryland
→1996Loudon Park National Cemetery — Baltimore (Independent City), Baltimore County, Maryland
→1973Lovely Lane Methodist Church — Baltimore (Independent City), Baltimore County, Maryland
→2001Lowe, Joshua, House — Rising Sun, Cecil County, Maryland
→1978Loys Station Covered Bridge — Thurmont, Frederick County, Maryland
→1972Lutherville Historic District — Lutherville, Baltimore County, Maryland
→1998Lyons, Joseph D., House — Sunderland, Calvert County, Maryland
→1986Lyric Theatre — Baltimore (Independent City), Baltimore County, Maryland
→2004MacAlpine — Ellicott City, Howard County, Maryland
→1985Maddox, George, Farm — Manokin, Somerset County, Maryland
→2002Maddux House — Upper Fairmount, Somerset County, Maryland
→1992Madison Avenue Methodist Episcopal Church — Baltimore (Independent City), Baltimore County, Maryland
→1985MAGGIE LEE — Tilghman, Talbot County, Maryland
→1985MAGIC (log canoe) — St. Michaels, Talbot County, Maryland
→1975Magnolia Plantation — Knoxville, Washington County, Maryland
→1971Maidstone — Owings, Calvert County, Maryland
→1975Make Peace — Crisfield, Somerset County, Maryland
→2008Makemie Memorial Presbyterian Church — Snow Hill, Worcester County, Maryland
→1979Mannheim — Sanmar, Washington County, Maryland
→1976Manokin Historic District — Princess Anne, Somerset County, Maryland
→1976Manokin Presbyterian Church — Princess Anne, Somerset County, Maryland
→1995Mansion House — Public Landing, Worcester County, Maryland
→1998Maple Leaf Farm Potato House — Hebron, Wicomico County, Maryland
→1975Maples, The — Smithsburg, Washington County, Maryland
→1996Mar-Va Theater — Pocomoke City, Worcester County, Maryland
→2002Marble Head — Ridgely, Caroline County, Maryland
→2017Marenka House — College Park, Prince George's County, Maryland
→1994Marietta — Glenn Dale, Prince George's County, Maryland
→2002Markell, George, Farmstead — Frederick, Frederick County, Maryland
→2023Market Center — Baltimore (Independent City), Baltimore County, Maryland
→1990Market Master's House — Bladensburg, Prince George's County, Maryland
→2005Marley Neck Rosenwald School — Glen Burnie, Anne Arundel County, Maryland
→1996Marsh Mills — Fairplay, Washington County, Maryland
→1976Marshall Hall — Bryan's Road, Charles County, Maryland
→2008MARTHA LEWIS (skipjack) — Havre de Grace, Harford County, Maryland
→1996Martin, James, House — Snow Hill, Worcester County, Maryland
→1976MARY W.SOMERS (Chesapeake Bay skipjack) — St. Marys City, St. Mary's County, Maryland
→1969Mary's Mount — Harwood, Anne Arundel County, Maryland
→2002Maryland Heights, Spur Battery — Sandy Hook, Washington County, Maryland
→1973Maryland House — Baltimore (Independent City), Baltimore County, Maryland
→1966Maryland Statehouse ★ NHL — Annapolis, Anne Arundel County, Maryland
→1976Maryland Theatre — Hagerstown, Washington County, Maryland
→2002Maryland White Lead Works — Baltimore (Independent City), Baltimore County, Maryland
→1998Mattapax — Stevensville, Queen Anne's County, Maryland
→1974Maxwell Hall — Patuxent, Charles County, Maryland
→2004Mayfield Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1979Maynard, Thomas, House — New London, Frederick County, Maryland
→1976McCauley, Henry, Farm — Hagerstown, Washington County, Maryland
→1976McCollum, Elmer V., House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1980McComas Institute — Joppa, Harford County, Maryland
→2015McDonogh Place Historic District — Baltimore, Baltimore County, Maryland
→1973McKim's School — Baltimore (Independent City), Baltimore County, Maryland
→1997McKinstry's Mills Historic District — Union Bridge, Carroll County, Maryland
→2001McMurray--Frizzell--Aldridge Farm — Westminster, Carroll County, Maryland
→1985McPherson's Purchase — Pomfret, Charles County, Maryland
→1985Meadow Brook Farm — Westminster, Carroll County, Maryland
→1988Meadows, The — Owings Mill, Baltimore County, Maryland
→1973Medical Hall Historic District — Churchville, Harford County, Maryland
→1988Melford — Mitchellville, Prince George's County, Maryland
→1976Melwood Park — Upper Marlboro, Prince George's County, Maryland
→2000Memory Lane — Denton, Caroline County, Maryland
→1983Mencken, H. L., House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→2018Mercantile Deposit and Trust — Baltimore (I), Baltimore County, Maryland
→1983Mercantile Trust and Deposit Company — Baltimore (Independent City), Baltimore County, Maryland
→1984Mercy Chapel at Mill Run — Selbysport, Garrett County, Maryland
→1991Merry Sherwood — Berlin, Worcester County, Maryland
→2017Mesrobian, Mihran, House — Chevy Chase, Montgomery County, Maryland
→1975Mettam Memorial Baptist Church — Pikesville, Baltimore County, Maryland
→1979Middle, East and West Halls — Chestertown, Kent County, Maryland
→1975Middleham Chapel — Lusby, Calvert County, Maryland
→2003Middletown Historic District — Middletown, Frederick County, Maryland
→1973Milimar — Silver Spring, Montgomery County, Maryland
→1993Mill Green Historic District — Street, Harford County, Maryland
→2003Miller, H.F. Miller & Son Tin Box and Can Manufacturing Plant — Baltimore (Independent City), Baltimore County, Maryland
→2010Miller's House — Wye Mills, Talbot County, Maryland
→1975Milton — Bethesda, Montgomery County, Maryland
→1985MINNIE V — Tilghman, Talbot County, Maryland
→1980Mitchell House — Fair Hill, Cecil County, Maryland
→1976Mitchell House — Elkton, Cecil County, Maryland
→1973Monocacy National Battlefield ★ NHL — Frederick, Frederick County, Maryland
→1986Montgomery County Courthouse Historic District — Rockville, Montgomery County, Maryland
→2000Montgomery Ward Warehouse and Retail Store — Baltimore (Independent City), Baltimore County, Maryland
→1970Montpelier ★ NHL — Laurel, Prince George's County, Maryland
→2000Montrose — Clarksville, Howard County, Maryland
→1990Montrose Mansion and Chapel — Reisterstown, Baltimore County, Maryland
→1983Montrose Schoolhouse — Rockville, Montgomery County, Maryland
→2005Moreland — Bethesda, Montgomery County, Maryland
→1976Morgan Hill Farm — Lusby, Calvert County, Maryland
→2020Morgan Park Historic District — Baltimore, Baltimore County, Maryland
→2018Morgan State University Memorial Chapel — Baltimore (Independent City), Baltimore County, Maryland
→1972Mother Seton House — Baltimore (Independent City), Baltimore County, Maryland
→1982Motter, John C., House — Frederick, Frederick County, Maryland
→1988Mount Adams — Bel Air, Harford County, Maryland
→1978Mount Air — Faulkner, Charles County, Maryland
→1973Mount Airy — Davidsonville, Anne Arundel County, Maryland
→1986Mount Airy — Sharpsburg, Washington County, Maryland
→1984Mount Airy Historic District — Mount Airy, Carroll County, Maryland
→2001Mount Auburn Cemetery — Baltimore (Independent City), Baltimore County, Maryland
→1996Mount Aventine — Bryans Road, Charles County, Maryland
→1970Mount Clare ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1986Mount de Sales Academy — Catonsville, Baltimore County, Maryland
→1974Mount Harmon — Earleville, Cecil County, Maryland
→1978Mount Hope — Cheverly, Prince George's County, Maryland
→1987Mount Lubentia — Largo, Prince George's County, Maryland
→1972Mount Pleasant — Upper Marlboro, Prince George's County, Maryland
→1990Mount Rainier Historic District — Mount Rainier, Prince George's County, Maryland
→1973Mount Royal Station ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1983Mount Savage Historic District — Mount Savage, Allegany County, Maryland
→2001Mount Vernon Mill No. 1 — Baltimore (Independent City), Baltimore County, Maryland
→1971Mount Vernon Place United Methodist Church and Asbury House — Baltimore (Independent City), Baltimore County, Maryland
→1990Mount Washington Mill — Baltimore (Independent City), Baltimore County, Maryland
→2001Mount Washington Mill Historic District (Boundary Increase) — Baltimore (Independent City), Baltimore County, Maryland
→1983Mountain Lake Park Historic District — Mountain Lake Park, Garrett County, Maryland
→1973Mt. Carmel Monastery — Port Tobacco, Charles County, Maryland
→1976Mt. Gilboa Chapel — Oella, Baltimore County, Maryland
→1973Mt. Moriah African Methodist Episcopal Church — Annapolis, Anne Arundel County, Maryland
→1985Mt. Nebo — Poolesville, Montgomery County, Maryland
→1998Mt. Pleasant — Union Bridge, Carroll County, Maryland
→2001Mt. Tabor Good Samaritan Lodge #59 — Crownsville, Anne Arundel County, Maryland
→2001Mt. Tabor Methodist Episcopal Church — Crownsville, Anne Arundel County, Maryland
→2007Mt. Zion Memorial Church — Princess Anne, Somerset County, Maryland
→1973Mulberry Fields — Beauvue, St. Mary's County, Maryland
→1978My Lady's Manor — Monkton and, Baltimore County, Maryland
→1974Myrtle Grove — Easton, Talbot County, Maryland
→1985MYSTERY (log canoe) — Kingstown, Queen Anne's County, Maryland
→1974Nallin Farm House — Frederick, Frederick County, Maryland
→1977Nallin Farm Springhouse and Bank Barn — Frederick, Frederick County, Maryland
→2014Nanticoke Lodge No. 172, A.F. and A.M. — Federalsburg, Caroline County, Maryland
→1975Nassawango Iron Furnace Site — Snow Hill, Worcester County, Maryland
→2002National Brewing Company — Baltimore (Independent City), Baltimore County, Maryland
→2002National Enameling and Stamping Company — Baltimore (Independent City), Baltimore County, Maryland
→1972National Park Seminary Ballroom — Forest Glen, Montgomery County, Maryland
→1976Neck Meetinghouse and Yard — West Denton, Caroline County, Maryland
→1994NELLIE CROCKETT ★ NHL — Georgetown, Kent County, Maryland
→1985NELLIE L. BYRD — Tilghman, Talbot County, Maryland
→1985Nelson Homestead — Crisfield, Somerset County, Maryland
→1991Nelson--Reardon--Kennard House — Abingdon, Harford County, Maryland
→1980Nelson, Henry, House — New Market, Frederick County, Maryland
→1975New Market Historic District — New Market, Frederick County, Maryland
→2018New Town Center — Hyattsville, Prince George's County, Maryland
→1997New Windsor Historic District — New Windsor, Carroll County, Maryland
→2001Nicodemus Mill Complex — Keedyville, Washington County, Maryland
→1974NOBSKA (steamship) — Baltimore (Independent City), Baltimore County, Maryland
→1985NODDY (log canoe) — St. Michaels, Talbot County, Maryland
→1984Norman's Retreat — Galesville, Anne Arundel County, Maryland
→1979Norris-Stirling House — Bel Air, Harford County, Maryland
→2003North Brentwood Historic District — North Brentwood, Prince George's County, Maryland
→2002North Central Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2001Northern District Police Station — Baltimore (Independent City), Baltimore County, Maryland
→1998Northwood Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1983Null House — Baltimore (Independent City), Baltimore County, Maryland
→1979Nun's Green — Snow Hill, Worcester County, Maryland
→1987O'Dea House — Berwyn Heights, Prince George's County, Maryland
→1983Oak Grove — La Plata, Charles County, Maryland
→1987Oak Hill Historic District — Hagerstown, Washington County, Maryland
→1975Oak Lawn — Ridgely, Caroline County, Maryland
→2013Oak Street Garage — Baltimore (Independent City), Baltimore County, Maryland
→2014Oakdale — Woodbine, Howard County, Maryland
→2003Oakenshawe Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1983Oakland — Bryantown, Charles County, Maryland
→1984Oakland Historic District — Oakland, Garrett County, Maryland
→2011Oakland Mills Blacksmith House and Shop — Columbia, Howard County, Maryland
→1996Oakley, Annie, House — Cambridge, Dorchester County, Maryland
→1982Oaks II — Laytonsville, Montgomery County, Maryland
→2001Oakwood — Harwood, Anne Arundel County, Maryland
→1969Obligation — Harwood, Anne Arundel County, Maryland
→1973Ocean Hall — Bushwood, St. Mary's County, Maryland
→1980Octorara Farm — Conowingo, Cecil County, Maryland
→1980Odd Fellows Hall — Baltimore (Independent City), Baltimore County, Maryland
→1975Odd Fellows Lodge — Bel Air, Harford County, Maryland
→2022Odenton Masonic Lodge No. 209 — Odenton, Anne Arundel County, Maryland
→1976Oella Historic District — Oella, Baltimore County, Maryland
→1980Old Bloomfield — Easton, Talbot County, Maryland
→1987Old Catonsville High School — Catonsville, Baltimore County, Maryland
→1975Old Chiswell Place — Poolesville, Montgomery County, Maryland
→1973Old City Hall and Engine House — Annapolis, Anne Arundel County, Maryland
→1979Old Forge Farm — Hagerstown, Washington County, Maryland
→1978Old Goucher College Buildings — Baltimore (Independent City), Baltimore County, Maryland
→2012Old Hamilton Library — Baltimore (Independent City), Baltimore County, Maryland
→1980Old Inn, The — St. Michaels, Talbot County, Maryland
→1966Old Lock Pump House, Chesapeake and Delaware Canal ★ NHL — Chesapeake City, Cecil County, Maryland
→1979Old Mill Road Bridge — Rocky Ridge, Frederick County, Maryland
→1975Old National Pike Milestones — Bellegrove, Allegany County, Maryland
→1985Old Pine Street Station — Baltimore (Independent City), Baltimore County, Maryland
→1969Old Roman Catholic Cathedral ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1977Old Salem Church and Cemetery — Catonsville, Baltimore County, Maryland
→2012Old Town College Park — College Park, Prince George's County, Maryland
→1973Old Town Friends' Meetinghouse — Baltimore (Independent City), Baltimore County, Maryland
→1996Old Town Savings Bank — Baltimore (Independent City), Baltimore County, Maryland
→1978Old Washington County Library — Hagerstown, Washington County, Maryland
→1984Old Wye Church — Wye Mills, Talbot County, Maryland
→1985OLIVER'S GIFT (log canoe) — Davidsonville, Anne Arundel County, Maryland
→1987Olney — Joppa, Harford County, Maryland
→2000One Charles Center — Baltimore (Independent City), Baltimore County, Maryland
→1977One-Million-Liter Test Sphere — Frederick, Frederick County, Maryland
→1975Orchard Street United Methodist Church — Baltimore (Independent City), Baltimore County, Maryland
→1978Orem's Delight — Bellevue, Talbot County, Maryland
→1997Orendorff, John, Farm — Westminster, Carroll County, Maryland
→1969Otterbein Church — Baltimore (Independent City), Baltimore County, Maryland
→1982Otwell — Oxford, Talbot County, Maryland
→1987Owens, James, Farm — Bristol, Anne Arundel County, Maryland
→2003Owensville Historic District — Owensville, Anne Arundel County, Maryland
→1978Owings Upper Mill — Owings Mills, Baltimore County, Maryland
→2005Oxford Historic District — Oxford, Talbot County, Maryland
→2003Oxon Cove Park — Oxon Hill, Prince George's County, Maryland
→1978Oxon Hill Manor — Oxon Hill, Prince George's County, Maryland
→1985Ozmon, Capt. John H., Store — Centreville, Queen Anne's County, Maryland
→1971Paca House and Garden ★ NHL — Annapolis, Anne Arundel County, Maryland
→1983Paca Street Firehouse — Baltimore (Independent City), Baltimore County, Maryland
→2015Packhorse Ford — Sharpsburg, Washington County, Maryland
→1984Panther's Den — Ventor, Somerset County, Maryland
→1978Paradise Manor — Hagerstown, Washington County, Maryland
→2008Park Circle Historic District — Baltimore, Baltimore County, Maryland
→2000Parker Metal Decoration Company Plant — Baltimore (Independent City), Baltimore County, Maryland
→2001Parkhurst — Harwood, Anne Arundel County, Maryland
→1983Parkton Hotel — Parkton, Baltimore County, Maryland
→1973Pascault Row — Baltimore (Independent City), Baltimore County, Maryland
→1985PATRICIA (log canoe) — Cambridge, Dorchester County, Maryland
→2002Patterson Park--Highlandtown Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1976Patterson Viaduct Ruins — Catonsville, Baltimore County, Maryland
→1977Paw Paw Building — Port Deposit, Cecil County, Maryland
→1971Peabody Library ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→2015Peace Cross — Bladensburg, Prince George's County, Maryland
→1966Peale's Baltimore Museum ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1979Pearre-Metcalfe House — Unionville, Frederick County, Maryland
→1973Peggy Stewart House ★ NHL — Annapolis, Anne Arundel County, Maryland
→1971Pemberton Hall — Salisbury, Wicomico County, Maryland
→1976Pennington Cottage — Deer Park, Garrett County, Maryland
→1975Pennsylvania Station — Baltimore (Independent City), Baltimore County, Maryland
→1976Pennterra — Creagerstown, Frederick County, Maryland
→1983Perkins Square Gazebo — Baltimore (Independent City), Baltimore County, Maryland
→1980Perry Hall — Perry Hall, Baltimore County, Maryland
→1975Perry Point Mansion House and Mill — Perryville, Cecil County, Maryland
→1977Perry-Cooper House — Salisbury, Wicomico County, Maryland
→1985PERSISTENCE (log canoe) — St. Michaels, Talbot County, Maryland
→2021Phillips Packing Company Plant F — Cambridge, Dorchester County, Maryland
→1977Phoenix Mill Farm — Cumberland, Allegany County, Maryland
→2006Pigtown Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1985Pikesville Armory — Pikesville, Baltimore County, Maryland
→2012Pine Street Neighborhood Historic District — Cambridge, Dorchester County, Maryland
→1976Piney Point Coast Guard Light Station — Piney Point, St. Mary's County, Maryland
→1971Pinkney-Callahan House — Annapolis, Anne Arundel County, Maryland
→1976Pipe Creek Friends Meetinghouse — Union Bridge, Carroll County, Maryland
→1999Piper House — Sharpsburg, Washington County, Maryland
→1966Piscataway Park — Accokeek, Prince George's County, Maryland
→2011Piscataway Village Historic District — Clinton, Prince George's County, Maryland
→1997Pleasant Hill — Pomfret, Charles County, Maryland
→1980Pleasant Hills — Upper Marlboro, Prince George's County, Maryland
→1976Pleasant Prospect — Mitchellville, Prince George's County, Maryland
→1983Plinlimmon Farm — Owings Mills, Baltimore County, Maryland
→2011Plumb Grove — Clear Spring, Washington County, Maryland
→2004Pocomoke City Historic District — Pocomoke City, Worcester County, Maryland
→1971Poe, Edgar Allan, House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1978Poffenberger Road Bridge — Middletown, Frederick County, Maryland
→2002Point No Point Light Station — Dameron, St. Mary's County, Maryland
→1973Point of Rocks Railroad Station — Point of Rocks, Frederick County, Maryland
→2007Polish Home Hall — Baltimore (Independent City), Baltimore County, Maryland
→1996Polychrome Historic District — Silver Spring, Montgomery County, Maryland
→1984Pomfret Plantation — Marion, Somerset County, Maryland
→1973Poole and Hunt Company Buildings — Baltimore (Independent City), Baltimore County, Maryland
→1983Poole, Nathan Dickerson, House — Poolesville, Montgomery County, Maryland
→1997Pooles Island Lighthouse — Edgewood, Harford County, Maryland
→1975Poolesville Historic District — Poolesville and, Montgomery County, Maryland
→1976Poplar Hill — Aberdeen, Harford County, Maryland
→1971Poplar Hill Mansion — Salisbury, Wicomico County, Maryland
→1983Poppleton Fire Station — Baltimore (Independent City), Baltimore County, Maryland
→1978Port Deposit — Port Deposit, Cecil County, Maryland
→1989Port Tobacco Historic District — Port Tobacco, Charles County, Maryland
→1996Portland Manor — Lothian, Anne Arundel County, Maryland
→1972Porto Bello — Drayden, St. Mary's County, Maryland
→1990Potomac--Broadway Historic District — Hagerstown, Washington County, Maryland
→1982Potter Hall — Williston, Caroline County, Maryland
→1987Pratt Street Power Plant — Baltimore (Independent City), Baltimore County, Maryland
→1974Presbury Meetinghouse — Aberdeen Proving Ground, Harford County, Maryland
→1992President Street Station — Baltimore (Independent City), Baltimore County, Maryland
→1974Preston-on-the-Patuxent — Johnstown, Calvert County, Maryland
→1976Price-Miller House — Hagerstown, Washington County, Maryland
→1990Priest Neal's Mass House and Mill Site — Bel Air, Harford County, Maryland
→2000Primrose Hill — Annapolis, Anne Arundel County, Maryland
→1980Princess Anne Historic District — Princess Anne, Somerset County, Maryland
→1996Pritchard, Dr. William B., House — Princess Anne, Somerset County, Maryland
→1999Proctor and Gamble Baltimore Plant — Baltimore (Independent City), Baltimore County, Maryland
→1990Proctor House — Bel Air, Harford County, Maryland
→1980Prospect Hall — Frederick, Frederick County, Maryland
→1973Prospect Hill — Long Green, Baltimore County, Maryland
→1973Public Safety Building — Cumberland, Allegany County, Maryland
→1979Public School No. 109 — Baltimore (Independent City), Baltimore County, Maryland
→1979Public School No. 111 — Baltimore (Independent City), Baltimore County, Maryland
→1979Public School No. 25 — Baltimore (Independent City), Baltimore County, Maryland
→1979Public School No. 37 — Baltimore (Independent City), Baltimore County, Maryland
→1979Public School No. 99 — Baltimore (Independent City), Baltimore County, Maryland
→1994Puncheon Mill House — Pocomoke City, Somerset County, Maryland
→1996Purnell, George Washington, House — Snow Hill, Worcester County, Maryland
→2009Quarter Place — Lothian, Anne Arundel County, Maryland
→2009Queenstown Rosenwald School — Severn, Anne Arundel County, Maryland
→1996Queponco Railway Station — Newark, Worcester County, Maryland
→1996Quindocqua United Methodist Church — Marion, Somerset County, Maryland
→2006Radcliffe Mill — Chestertown, Kent County, Maryland
→2003Radnor--Winston Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1985RALPH T. WEBSTER — Tilghman, Talbot County, Maryland
→1978Ravenshurst — Glen Arm, Baltimore County, Maryland
→1973Readbourne — Centreville, Queen Anne's County, Maryland
→1985REBECCA T. RUARK ★ NHL — Tilghman, Talbot County, Maryland
→1975Reed's Creek Farm — Centreville, Queen Anne's County, Maryland
→1974Rehobeth Presbyterian Church — Rehobeth, Somerset County, Maryland
→1972Rehoboth — Eldorado, Dorchester County, Maryland
→1979Reisterstown Historic District — Reisterstown, Baltimore County, Maryland
→1976RELIANCE (Chesapeake Bay skipjack) — Tilghman, Talbot County, Maryland
→1975Remsen, Ira, House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→2004Reservoir Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1988Retreat — Port Tobacco, Charles County, Maryland
→1974Reward — Shelltown, Somerset County, Maryland
→1976Reward-Tilden's Farm — Chestertown, Kent County, Maryland
→1972Rich Hill — Sassafras, Kent County, Maryland
→1975Rich Hill — Bel Alton, Charles County, Maryland
→2005Rich Mountain — Frederick, Frederick County, Maryland
→1979Richards, Thomas, House — Rising Sun, Cecil County, Maryland
→2007Richland — Harwood, Anne Arundel County, Maryland
→2008Richland Farm — Clarksville, Howard County, Maryland
→1988Ridge, The — Derwood, Montgomery County, Maryland
→2015Ridgeley School — Capitol Heights, Prince George's County, Maryland
→1980Ridgely's Delight Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1977Ridgeton Farm — Taylor's Island, Dorchester County, Maryland
→2005Ridgley Methodist Episcopal Church — Landover, Prince George's County, Maryland
→1984Rieman Block — Baltimore (Independent City), Baltimore County, Maryland
→1973Rigbie House — Berkley, Harford County, Maryland
→2011Riley--Bolten House — North Bethesda, Montgomery County, Maryland
→1985Rising Sun Inn — Millersville, Anne Arundel County, Maryland
→1976River View, The — Oakley, St. Mary's County, Maryland
→2002Riverdale Park Historic District — Riverdale Park, Prince George's County, Maryland
→1973Riversdale ★ NHL — Riverdale, Prince George's County, Maryland
→2021Riverside Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1999Riviera Apartments — Baltimore (Independent City), Baltimore County, Maryland
→2006Roberts Inn — Cooksville, Howard County, Maryland
→2009Robinson House — Severna Park, Anne Arundel County, Maryland
→1980Rock Clift — Matthews, Talbot County, Maryland
→1990Rock Creek Methodist Episcopal Church — Chance, Somerset County, Maryland
→2004Rock Creek Woods Historic District — Silver Spring, Montgomery County, Maryland
→2014Rock Methodist Episcopal Church — Cambridge, Dorchester County, Maryland
→1993Rock Run Mill — Darlington, Harford County, Maryland
→1983Rock United Presbyterian Church — Elkton, Cecil County, Maryland
→1982Rockdale — Fallston, Harford County, Maryland
→1983Rockland — Brooklandville, Baltimore County, Maryland
→1978Rockland Farm — Hagerstown, Washington County, Maryland
→1986Rockland Farm — Westminster, Carroll County, Maryland
→1973Rockland Historic District — Brooklandville, Baltimore County, Maryland
→2003Rockledge — Hagerstown, Washington County, Maryland
→2011Rockville Park Historic District — Rockville, Montgomery County, Maryland
→1974Rockville Railroad Station — Rockville, Montgomery County, Maryland
→1978Roddy Road Covered Bridge — Thurmont, Frederick County, Maryland
→2009Rodgers Forge Historic District — Baltimore, Baltimore County, Maryland
→1972Rodgers Tavern — Perryville, Cecil County, Maryland
→1979Rohrer House — Hagerstown, Washington County, Maryland
→1974Roland Park Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2008Rolling Mill Historic District — Cumberland, Allegany County, Maryland
→2005Rombro Building — Baltimore (Independent City), Baltimore County, Maryland
→2008Roop's Mill — Westminster, Carroll County, Maryland
→1976Rose Hill — Chestertown, Kent County, Maryland
→1973Rose Hill — Port Tobacco, Charles County, Maryland
→1973Rose Hill — Williamsport, Washington County, Maryland
→1974Rose Hill — Earleville, Cecil County, Maryland
→1971Rose Hill Manor — Frederick, Frederick County, Maryland
→1987Rosehill — Gambrills, Anne Arundel County, Maryland
→1992Rosemary Lawn — Welcome, Charles County, Maryland
→2008Round About Hills — Glenwood, Howard County, Maryland
→2006Routzahn--Miller Farmstead — Middletown, Frederick County, Maryland
→1985ROVER (log canoe) — St. Michaels, Talbot County, Maryland
→1984Rowhouses at 303-327 East North Avenue — Baltimore (Independent City), Baltimore County, Maryland
→1975Rowland, Henry August, House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1979Royer, Christian, House — Westminster, Carroll County, Maryland
→1985RUBY G. FORD — Tilghman, Talbot County, Maryland
→1980Rudisel, Ludwick, Tannery House — Taneytown, Carroll County, Maryland
→2007Ruscombe — Baltimore (Independent City), Baltimore County, Maryland
→1985S. C. DOBSON (log canoe) — Oxford, Talbot County, Maryland
→1987Saint Mary's Rectory — Aquasco, Prince George's County, Maryland
→1982Saint Michaels Mill — St. Michaels, Talbot County, Maryland
→1979Saleaudo — Frederick, Frederick County, Maryland
→1975Salisbury Plantation — Westover, Somerset County, Maryland
→2002Salmon--Stohlman House — Chevy Chase, Montgomery County, Maryland
→1998Samester Parkway Apartments — Baltimore (Independent City), Baltimore County, Maryland
→2007San Domingo School — Sharpstown, Wicomico County, Maryland
→1978Sandgates On Cat Creek — Oakville, St. Mary's County, Maryland
→2021Sands, John, House — Annapolis, Anne Arundel County, Maryland
→1985SANDY (log canoe) — Sherwood, Talbot County, Maryland
→1972Sandy Point Farmhouse — Sandy Point, Anne Arundel County, Maryland
→2002Sandy Point Shoal Light Station — Skidmore, Anne Arundel County, Maryland
→1972Sandy Spring Friends Meetinghouse — Sandy Spring, Montgomery County, Maryland
→1994Sanitary Laundry Company Building — Baltimore (Independent City), Baltimore County, Maryland
→1974Sarum — Newport, Charles County, Maryland
→1974Savage Mill — Savage, Howard County, Maryland
→1975Savage Mill Historic District — Savage, Howard County, Maryland
→1974Scheifferstadt — Frederick, Frederick County, Maryland
→1986School No. 27 (Commodore John Rodgers Elementary School) — Baltimore (Independent City), Baltimore County, Maryland
→1978Schoolhouse, Denton — Denton, Caroline County, Maryland
→1984Schoolridge Farm — Upper Fairmount, Somerset County, Maryland
→1985Schuler, Hans, Studio and Residence — Baltimore (Independent City), Baltimore County, Maryland
→1985Schwartze Mansion — Baltimore (Independent City), Baltimore County, Maryland
→2009Scott, Lula G., Community Center — Shady Side, Anne Arundel County, Maryland
→2004Scott, Robert and Phyllis, House — Westminster, Carroll County, Maryland
→1975Scott, Upton, House — Annapolis, Anne Arundel County, Maryland
→1985SEA GULL — Deal Island, Somerset County, Maryland
→1983Search Well — Burtner, Washington County, Maryland
→2001Sellers Mansion — Baltimore (Independent City), Baltimore County, Maryland
→1989Senator Theatre — Baltimore (Independent City), Baltimore County, Maryland
→1978Seneca Historic District — Poolesville, Montgomery County, Maryland
→1973Seneca Quarry — Seneca, Montgomery County, Maryland
→1975Seton Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1989Seven-Foot Knoll Lighthouse — Baltimore (Independent City), Baltimore County, Maryland
→1996Shaarei Tfiloh Synagogue — Baltimore (Independent City), Baltimore County, Maryland
→1986Shafer's Mill — Middletown, Frederick County, Maryland
→1998Shaffer, Jacob F., Farm — Millers, Carroll County, Maryland
→1982Sharp Street Memorial United Methodist Church and Community House — Baltimore (Independent City), Baltimore County, Maryland
→1982Sharps Island Light — Tilghman Island, Talbot County, Maryland
→2008Sharpsburg Historic District — Sharpsburg, Washington County, Maryland
→1985Shaw Mansion — Barton, Allegany County, Maryland
→2001Sheffer, Daniel, Farm — Middletown, Frederick County, Maryland
→1976Shepherd's Delight — Still Pond, Kent County, Maryland
→1971Sheppard and Enoch Pratt Hospital and Gatehouse ★ NHL — Towson, Baltimore County, Maryland
→1977Sherwood Manor — St. Michaels, Talbot County, Maryland
→1989Shoemaker, Henry, Farmhouse — Middletown, Frederick County, Maryland
→1969Shot Tower ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1986Shrewsbury Church — Kennedyville, Kent County, Maryland
→1985SIGSBEE — Tilghman, Talbot County, Maryland
→1985SILVER HEEL (log canoe) — Chestertown, Kent County, Maryland
→1984Silver Houses Historic District — Darlington, Harford County, Maryland
→2000Silver Spring Baltimore and Ohio Railroad Station — Silver Spring, Montgomery County, Maryland
→1996Simpson's Grove — Ironshire, Worcester County, Maryland
→1990Sion Hill ★ NHL — Havre de Grace, Harford County, Maryland
→2007Slagle--Byers House (CARR-821) — Westminster, Carroll County, Maryland
→1987Slate Ridge School — Whiteford, Harford County, Maryland
→2010Smeltzer, Henry, Farmstead — Middletown, Frederick County, Maryland
→1994Smith, Gov. John Walter, House — Snow Hill, Worcester County, Maryland
→1993Smith, Harry, House — Riverdale, Prince George's County, Maryland
→1991Smith, William S., House — Oriole, Somerset County, Maryland
→1979Snively Farm — Eakles Mills, Washington County, Maryland
→1974Snow Hill — Laurel, Prince George's County, Maryland
→1982Sonneborn Building — Baltimore (Independent City), Baltimore County, Maryland
→1973Sophia's Dairy — Aberdeen, Harford County, Maryland
→1972Sotterley ★ NHL — Hollywood, St. Mary's County, Maryland
→2001South Central Avenue Historic District — Baltimore, Baltimore County, Maryland
→1974South Chesapeake City Historic District — Chesapeake City, Cecil County, Maryland
→1979South Prospect Street Historic District — Hagerstown, Washington County, Maryland
→1969South River Club — South River, Anne Arundel County, Maryland
→2001Southern District Police Station — Baltimore (Independent City), Baltimore County, Maryland
→1976Southern Terminal, Susquehanna and Tidewater Canal — Havre de Grace, Harford County, Maryland
→1985Spacecraft Magnetic Test Facility ★ NHL — Greenbelt, Prince George's County, Maryland
→1978Sprechers Mill House — Williamsport, Washington County, Maryland
→1984Spring Bank — Frederick, Frederick County, Maryland
→1976Spring Hill Church — Hebron, Wicomico County, Maryland
→1974Springfield Farm — Williamsport, Washington County, Maryland
→1986Springfield Presbyterian Church — Sykesville, Carroll County, Maryland
→1990Spye Park — White Plains, Charles County, Maryland
→1997SS JOHN W. BROWN (Liberty Ship) — Baltimore (Independent City), Baltimore County, Maryland
→1973St. Alphonsus' Church, Rectory, Convent and Halle — Baltimore (Independent City), Baltimore County, Maryland
→1973St. Andrew's Church — Leonardtown, St. Mary's County, Maryland
→1984St. Andrew's Episcopal Chapel — Sudlersville, Queen Anne's County, Maryland
→1975St. Bartholomew's Episcopal Church — Quantico, Wicomico County, Maryland
→1974St. Catharine — Waldorf, Charles County, Maryland
→1983St. Charles College Historic District — Catonsville, Baltimore County, Maryland
→1987St. Charles College Historic District (Boundary Increase) — Catonsville, Baltimore County, Maryland
→1972St. Clement's Island Historic District — Colton, St. Mary's County, Maryland
→2023St. Dennis Roman Catholic Church Complex — Galena, Kent County, Maryland
→1994St. Elizabeth of Hungary — Baltimore (Independent City), Baltimore County, Maryland
→1984St. Euphemia's School and Sisters' House — Emmitsburg, Frederick County, Maryland
→1975St. Francis Xavier Church — Warwick, Cecil County, Maryland
→1972St. Francis Xavier Church and Newtown Manor House — Compton, St. Mary's County, Maryland
→1976St. George's Parish Vestry House — Perryman, Harford County, Maryland
→1973St. George's Protestant Episcopal Church — Valley Lee, St. Mary's County, Maryland
→1982St. Giles — Hebron, Wicomico County, Maryland
→1974St. Ignatius Church — Forest Hill, Harford County, Maryland
→1974St. Ignatius Church — Oxon Hill, Prince George's County, Maryland
→1975St. Ignatius Roman Catholic Church — St. Inigoes, St. Mary's County, Maryland
→1972St. James Church — Bristol, Anne Arundel County, Maryland
→1974St. James Church — Monkton, Baltimore County, Maryland
→1982St. James the Less Roman Catholic Church — Baltimore (Independent City), Baltimore County, Maryland
→1982St. John the Evangelist Roman Catholic Church — Baltimore (Independent City), Baltimore County, Maryland
→1973St. John's Chapel of St. Michael's Parish — Easton, Talbot County, Maryland
→1982St. John's Church — Ruxton, Baltimore County, Maryland
→1974St. John's Church — Oxon Hill, Prince George's County, Maryland
→2007St. John's Church at Creagerstown Historic District — Thurmont, Frederick County, Maryland
→1990St. John's Methodist Episcopal Church and Joshua Thomas Chapel — Deal Island, Somerset County, Maryland
→1974St. John's Protestant Episcopal Church — Baltimore (Independent City), Baltimore County, Maryland
→1976St. Joseph's College and Mother Seton Shrine — Emmitsburg, Frederick County, Maryland
→1983St. Leo's Church — Baltimore (Independent City), Baltimore County, Maryland
→1977St. Luke's Church — Church Hill, Queen Anne's County, Maryland
→1973St. Luke's Church — Baltimore (Independent City), Baltimore County, Maryland
→1990St. Mark's Episcopal Church — Kingston, Somerset County, Maryland
→1999St. Mark's Episcopal Church--Lappans — Boonsboro, Washington County, Maryland
→1977St. Martins Church — Showell, Worcester County, Maryland
→2005St. Mary's Benefical Society Hall — Upper Marlboro, Prince George's County, Maryland
→1973St. Mary's Church — Emmorton, Harford County, Maryland
→1985St. Mary's Episcopal Church/Woodlawn — Woodlawn, Baltimore County, Maryland
→1991St. Mary's Roman Catholic Church, Newport — Newport, Charles County, Maryland
→1971St. Mary's Seminary Chapel ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1972St. Matthew's Church — Seat Pleasant, Prince George's County, Maryland
→1979St. Michael's Church — Reisterstown, Baltimore County, Maryland
→1989St. Michael's Church Complex — Baltimore (Independent City), Baltimore County, Maryland
→1986St. Michaels Historic District — St. Michaels, Talbot County, Maryland
→2008St. Paul's by-the-sea Protestant Episcopal Church — Ocean City, Worcester County, Maryland
→1988St. Paul's Cemetery — Baltimore (Independent City), Baltimore County, Maryland
→1973St. Paul's Chapel — Crownsville, Anne Arundel County, Maryland
→1980St. Paul's Church — Fairlee, Kent County, Maryland
→1973St. Paul's Church Rectory — Baltimore (Independent City), Baltimore County, Maryland
→1975St. Paul's Episcopal Church — Hillsboro, Caroline County, Maryland
→1978St. Paul's Episcopal Church — Point of Rocks, Frederick County, Maryland
→1996St. Paul's Methodist Episcopal Church — Westover, Somerset County, Maryland
→1977St. Paul's Parish Church — Brandywine, Prince George's County, Maryland
→1973St. Paul's Protestant Episcopal Church — Baltimore (Independent City), Baltimore County, Maryland
→1990St. Paul's Protestant Episcopal Church — Tulls Corner, Somerset County, Maryland
→1976St. Peter the Apostle Church and Buildings — Baltimore (Independent City), Baltimore County, Maryland
→1980St. Peter's Church — Queenstown, Queen Anne's County, Maryland
→1990St. Peter's Methodist Episcopal Church — Hopewell, Somerset County, Maryland
→1985St. Richard's Manor — Lexington Park, St. Mary's County, Maryland
→1982St. Stephen's Episcopal Church — Earleville, Cecil County, Maryland
→1979St. Thomas Church — Owings Mills, Baltimore County, Maryland
→1988St. Thomas Manor — Port Tobacco, Charles County, Maryland
→2000St. Thomas' Church — Upper Marlboro, Prince George's County, Maryland
→1974St. Vincent De Paul Roman Catholic Church — Baltimore (Independent City), Baltimore County, Maryland
→1988Stagg Hall — Port Tobacco, Charles County, Maryland
→1975Stancioff House — Urbana, Frederick County, Maryland
→2000Standard Oil Building — Baltimore (Independent City), Baltimore County, Maryland
→1975Stanley Institute — Cambridge, Dorchester County, Maryland
→1985STANLEY NORMAN — St. Michaels, Talbot County, Maryland
→1983Stanton Center — Annapolis, Anne Arundel County, Maryland
→1983Stanton's Mill — Grantsville, Garrett County, Maryland
→1985Stevensville Bank — Stevensville, Queen Anne's County, Maryland
→1986Stevensville Historic District — Stevensville, Queen Anne's County, Maryland
→1999Stewart's Department Store — Baltimore (Independent City), Baltimore County, Maryland
→2000Stieff Silver Company Factory — Baltimore (Independent City), Baltimore County, Maryland
→2009Still Pond Historic District — Still Pond, Kent County, Maryland
→1973Stone Hall — Cockeysville, Baltimore County, Maryland
→2001Stone Hill Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2002Stonebraker and Harbaugh--Shafer Building — Middletown, Frederick County, Maryland
→2003Stoneleigh Historic District — Towson, Baltimore County, Maryland
→1996Stoner--Saum Farm — Union Bridge, Carroll County, Maryland
→2003Stratton — Centreville, Queen Anne's County, Maryland
→1976Strawberry Hill — Creagerstown, Frederick County, Maryland
→1990Streett, Col. John, House — Street, Harford County, Maryland
→1973Sudbrook Park — Pikesville, Baltimore County, Maryland
→1973Sudler's Conclusion — Manokin, Somerset County, Maryland
→1973Sudley — Deale, Anne Arundel County, Maryland
→1974Summer Hill — Davidsonville, Anne Arundel County, Maryland
→1979Summit — Catonsville, Baltimore County, Maryland
→2005Sumner, Charles, Post #25, Grand Army of the Republic — Chestertown, Kent County, Maryland
→1983Sunnyfields — Linthicum Heights, Anne Arundel County, Maryland
→1987Sunnyside — Aquasco, Prince George's County, Maryland
→1973Surratt House — Clinton, Prince George's County, Maryland
→1985SUSAN MAY — Wenona, Somerset County, Maryland
→1983Susanna Farm — Dawsonville, Montgomery County, Maryland
→1994Swansbury — Aberdeen, Harford County, Maryland
→1985Swiss Steam Laundry Building — Baltimore (Independent City), Baltimore County, Maryland
→1988Sycamore Cottage — Cambridge, Dorchester County, Maryland
→1998Sydenham Hospital for Communicable Diseases — Baltimore (Independent City), Baltimore County, Maryland
→1985Sykesville Historic District — Sykesville, Carroll County, Maryland
→2004Takoma Avenue Historic District — Takoma Park, Montgomery County, Maryland
→1976Takoma Park Historic District — Takoma Park, Montgomery County, Maryland
→1979Tammany — Williamsport, Washington County, Maryland
→1972Taney Place — Adeline, Calvert County, Maryland
→1986Taneytown Historic District — Taneytown, Carroll County, Maryland
→1990Tawes, Capt. Leonard, House — Crisfield, Somerset County, Maryland
→2009Taylor-Manning-Leppo House — Finksburg, Carroll County, Maryland
→1985Taylor, David W., Model Basin — Bethesda, Montgomery County, Maryland
→1983Taylor's Chapel — Baltimore (Independent City), Baltimore County, Maryland
→2011Tayman Tobacco Barn — Upper Marlboro, Prince George's County, Maryland
→1971Teackle Mansion — Princess Anne, Somerset County, Maryland
→1976Temora — Ellicott City, Howard County, Maryland
→1980TENNISON, WM. B. (Chesapeake Bay Bugeye) ★ NHL — Solomons, Calvert County, Maryland
→1978Terminal Warehouse — Baltimore (Independent City), Baltimore County, Maryland
→1978Terra Rubra — Keysville, Carroll County, Maryland
→1990Thainston — La Plata, Charles County, Maryland
→1985The Wilderness — Catonsville, Baltimore County, Maryland
→1978Third Addition to Rockville and Old St. Mary's Church and Cemetery — Rockville, Montgomery County, Maryland
→1990Thomas and Company Cannery — Gaithersburg, Montgomery County, Maryland
→1976Thomas House — Ruthsburg, Queen Anne's County, Maryland
→1975Thomas Point Shoals Light Station ★ NHL — Annapolis, Anne Arundel County, Maryland
→1978Thomas Run Church — Bel Air, Harford County, Maryland
→1966Thomas Viaduct, Baltimore & Ohio Railroad ★ NHL — Relay, Baltimore County, Maryland
→1985THOMAS W. CLYDE — Wenona, Somerset County, Maryland
→2005Thornton — Chestertown, Kent County, Maryland
→2007Tidewater Inn — Easton, Talbot County, Maryland
→1979Timber Neck Farm — Faulkner, Charles County, Maryland
→2001Tipahato — Cascade, Frederick County, Maryland
→1980Tivoli — Baltimore (Independent City), Baltimore County, Maryland
→1973Todd Farmhouse — Fort Howard, Baltimore County, Maryland
→2008Tolson's Chapel — Sharpsburg, Washington County, Maryland
→1984Tome School for Boys Historic District — Port Deposit, Cecil County, Maryland
→1973Tomlinson Inn and the Little Meadows — Grantsville, Garrett County, Maryland
→1979Town Clock Church — Cumberland, Allegany County, Maryland
→1985Towson Academy — Towson, Baltimore County, Maryland
→1984Traband, John H., House — Upper Marlboro, Prince George's County, Maryland
→1982Tracy's Landing Tobacco House No. 2 — Tracy's Landing, Anne Arundel County, Maryland
→1977Trevanion — Uniontown, Carroll County, Maryland
→1974Trinity Church — Elkridge, Howard County, Maryland
→1975Troth's Fortune — Easton, Talbot County, Maryland
→1975Trovinger Mill — Hagerstown, Washington County, Maryland
→1979Troy — Dorsey, Howard County, Maryland
→1988Truman's Place — Hughesville, Charles County, Maryland
→1980Trumpington — Rock Hall, Kent County, Maryland
→1986Truog, George, House — Cumberland, Allegany County, Maryland
→1974Tudor Hall — Upper Fairmount, Somerset County, Maryland
→1973Tudor Hall — Bel Air, Harford County, Maryland
→1973Tudor Hall — Leonardtown, St. Mary's County, Maryland
→1982Tudor Hall (Boundary Decrease) — Bel Air, Harford County, Maryland
→1970Tulip Hill ★ NHL — Galesville, Anne Arundel County, Maryland
→1996Tull, William T., House — Westover, Somerset County, Maryland
→1979Turkey Hill — Linthicum Heights, Anne Arundel County, Maryland
→2002Turkey Point Light Station — North East, Cecil County, Maryland
→1995Turner--White Casket Co. Building — Baltimore (Independent City), Baltimore County, Maryland
→2011Turner's and Fox's Gaps Historic District — Middletown, Frederick County, Maryland
→2001Tuscany--Canterbury Historic District — Baltimore, Baltimore County, Maryland
→1986Twin Oaks — Linthicum Heights, Anne Arundel County, Maryland
→1985Tyrconnell — Baltimore, Baltimore County, Maryland
→2001U-1105 BLACK Panther (Type VIIC German Submarine) — Piney Point, St. Mary's County, Maryland
→1983U.S. Coast Guard Yard Curtis Bay — Baltimore, Anne Arundel County, Maryland
→1974U.S. Custom House — Baltimore (Independent City), Baltimore County, Maryland
→1966U.S. Naval Academy ★ NHL — Annapolis, Anne Arundel County, Maryland
→1977U.S. Post Office and Courthouse — Baltimore (Independent City), Baltimore County, Maryland
→1966U.S.S. CONSTELLATION ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→2009Union Baptist Church — Baltimore City, Baltimore County, Maryland
→1994Union Bridge Historic District — Union Bridge, Carroll County, Maryland
→1976Union Bridge Station — Union Bridge, Carroll County, Maryland
→1975Union Chapel — Glenwood, Howard County, Maryland
→1979Union Grove Schoolhouse — Cumberland, Allegany County, Maryland
→1971Union Mills Homestead Historic District — Westminster, Carroll County, Maryland
→1983Union Square-Hollins Market Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2007Union Station, WI-150 — Salisbury, Wicomico County, Maryland
→1973Uniontown Academy — Uniontown, Carroll County, Maryland
→1986Uniontown Historic District — Uniontown, Carroll County, Maryland
→2002United States Parcel Post Station — Baltimore (Independent City), Baltimore County, Maryland
→2016United States Post Office — Salisbury, Wicomico County, Maryland
→2008Universal Lodge No. 14 — Annapolis, Anne Arundel County, Maryland
→1996University Park Historic District — University Park, Prince George's County, Maryland
→2012University Park Historic District (Boundary Increase) — University Park, Prince George's County, Maryland
→1993Upper Fairmount Historic District — Upper Fairmount, Somerset County, Maryland
→2007Upper Fells Point Historic District — Baltimore, Baltimore County, Maryland
→2012Upper Marlboro Residential Historic District — Upper Marlboro, Prince George's County, Maryland
→1994Upton — Baltimore (Independent City), Baltimore County, Maryland
→1986US Post Office--Hyattsville Main — Hyattsville, Prince George's County, Maryland
→1988USCGC TANEY (WHEC-37) ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1986USS TORSK (submarine) ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1978Utica Covered Bridge — Thurmont, Frederick County, Maryland
→1974Valentia — Hagerstown, Washington County, Maryland
→1982Valhalla — Poolesville, Montgomery County, Maryland
→1983Valley Cottage — Georgetown, Kent County, Maryland
→1976Victorian Corn Cribs — St. Michaels, Talbot County, Maryland
→1977Villa Anneslie — Towson, Baltimore County, Maryland
→1988Villa DeSales — Aquasco, Prince George's County, Maryland
→1994Vineyard, The — Bel Air, Harford County, Maryland
→1985VIRGINIA W — Tilghman, Talbot County, Maryland
→1988Waddy House — Princess Anne, Somerset County, Maryland
→1997Wailes, F. Leonard, Law Office — Salisbury, Wicomico County, Maryland
→1979Walters Bath No. 2 — Baltimore (Independent City), Baltimore County, Maryland
→1997Ward Brothers' House and Shop — Crisfield, Somerset County, Maryland
→2000Warfield Complex, Hubner, and T Buildings — Sykesville, Carroll County, Maryland
→1974Washington County Courthouse — Hagerstown, Washington County, Maryland
→2020Washington Grove Historic District — Washington Grove, Montgomery County, Maryland
→1972Washington Monument — Boonsboro, Washington County, Maryland
→1973Washington Street Historic District — Cumberland, Allegany County, Maryland
→1974Washington, George, House — Bladensburg, Prince George's County, Maryland
→1986Waterloo — Princess Anne, Somerset County, Maryland
→1984Waters' River — Manokin, Somerset County, Maryland
→2002Watkins Point Farm — Marion Station, Somerset County, Maryland
→1974Waverley — Marriottsville, Howard County, Maryland
→1975Waverley — Morgantown, Charles County, Maryland
→1987Waverly — Croom, Prince George's County, Maryland
→2013Waverly Main Street Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1984Waverly Street Bridge — Westernport, Allegany County, Maryland
→1975Weaver-Fox House — Uniontown, Carroll County, Maryland
→1983Webster's Forest — Churchville, Harford County, Maryland
→1976Weiskittel-Roehle Burial Vault — Baltimore (Independent City), Baltimore County, Maryland
→1976Welch, William H., House ★ NHL — Baltimore (Independent City), Baltimore County, Maryland
→1984Wesley Chapel Methodist Episcopal Church — Eldersburg, Carroll County, Maryland
→2023West Baltimore Historic District, Old — Baltimore (Independent City), Baltimore County, Maryland
→2000West Denton Warehouse--Wharf — West Denton, Caroline County, Maryland
→1975West Montgomery Avenue Historic District — Rockville, Montgomery County, Maryland
→1990West Nottingham Academy Historic District — Colora, Cecil County, Maryland
→1976West Nottingham Meetinghouse — Rising Sun, Cecil County, Maryland
→2002West Riverdale Historic District — Riverdale Park, Prince George's County, Maryland
→1970West St. Mary's Manor ★ NHL — Drayden, St. Mary's County, Maryland
→1985Wester Ogle — Pikesville, Baltimore County, Maryland
→1987Western Fields — Hebron, Wicomico County, Maryland
→1976Western Maryland College Historic District — Westminster, Carroll County, Maryland
→1981Western Maryland Railroad Right-of-Way, Milepost 126 to Milepost 160 — Woodmont to North Branch, Allegany County, Maryland
→1973Western Maryland Railway Station — Cumberland, Allegany County, Maryland
→1976Western Maryland Railway Station — Hagerstown, Washington County, Maryland
→1984Western Maryland Railway Steam Locomotive No. 202 — Hagerstown, Washington County, Maryland
→1979Western Run-Belfast Road Historic District — Lutherville, Baltimore County, Maryland
→1980Westminster Historic District — Westminster, Carroll County, Maryland
→1974Westminster Presbyterian Church and Cemetery — Baltimore (Independent City), Baltimore County, Maryland
→1990Whitaker's Mill Historic District — Joppa, Harford County, Maryland
→1977White Hall — Ellicott City, Howard County, Maryland
→1984White Hall — Princess Anne, Somerset County, Maryland
→1992White House Farm — Chestertown, Kent County, Maryland
→2005Whiteford--Cardiff Historic District — Whiteford, Harford County, Maryland
→1966Whitehall ★ NHL — Annapolis, Anne Arundel County, Maryland
→1980Whitehaven Historic District — Whitehaven, Wicomico County, Maryland
→1996Whitehaven Hotel — Whitehaven, Wicomico County, Maryland
→1972Widehall — Chestertown, Kent County, Maryland
→1985Widrick, George, House — Frederick, Frederick County, Maryland
→1974Wilderness, The — Trappe, Talbot County, Maryland
→1973Wildfell — Darlington, Harford County, Maryland
→2000Wiley--Ringland House — Chevy Chase, Montgomery County, Maryland
→1980Wilkens-Robins Building — Baltimore (Independent City), Baltimore County, Maryland
→1993Willard, George,House — Jefferson, Frederick County, Maryland
→1996Williams Grove — Berlin, Worcester County, Maryland
→1980Williams Plains — Bowie, Prince George's County, Maryland
→1984Williams' Conquest — Marion Station, Somerset County, Maryland
→2001Williamsport Historic District — Williamsport, Washington County, Maryland
→2002Williston Mill Historic District — Denton, Caroline County, Maryland
→1973Willow Glenn — Barstow, Calvert County, Maryland
→1972Willow Grove — Greensboro, Caroline County, Maryland
→1973Willows, The — Cavetown, Washington County, Maryland
→1998Wilson School — Clear Spring, Washington County, Maryland
→1980Wilson-Miller Farm — Sharpsburg, Washington County, Maryland
→1996Wilson, Rufus, Complex — Clear Spring, Washington County, Maryland
→1982Wilson's Bridge — Hagerstown, Washington County, Maryland
→1985Wilson's Inheritance — Union Bridge, Carroll County, Maryland
→1977Wilton — Wye Mills, Queen Anne's County, Maryland
→2002Windsor Hills Historic District — Baltimore (Independent City), Baltimore County, Maryland
→2006Winemiller Family Farm — Taneytown, Carroll County, Maryland
→1979Winsted — Aberdeen, Harford County, Maryland
→2007Winters Lane Historic District — Catonsville, Baltimore County, Maryland
→2000Woburn Manor — Sharpsburg, Washington County, Maryland
→2002Wolfe, James K.P., House — Frederick, Frederick County, Maryland
→1978Woman's Industrial Exchange — Baltimore (Independent City), Baltimore County, Maryland
→2003Woodberry Historic District — Baltimore (Independent City), Baltimore County, Maryland
→1980Woodend — Chevy Chase, Montgomery County, Maryland
→2008Woodland Hall — Kennedyville, Kent County, Maryland
→1979Woodlands — Perryville, Cecil County, Maryland
→1980Woodlawn — St. Marys, St. Mary's County, Maryland
→1983Woodlawn — Columbia, Howard County, Maryland
→2007Woods Mill Farm — Woodsboro, Frederick County, Maryland
→1979Woodsboro and Frederick Turnpike Company Tollhouse — Walkersville, Frederick County, Maryland
→1979Woodside — Abingdon, Harford County, Maryland
→1987Woodstock — Upper Marlboro, Prince George's County, Maryland
→1990Woodview — Bel Air, Harford County, Maryland
→2003Woodwardville — Woodwardville, Anne Arundel County, Maryland
→1976Worthington Valley Historic District — Glyndon, Baltimore County, Maryland
→1986Wright, Robert Llewellyn, House — Bethesda, Montgomery County, Maryland
→1970Wye House ★ NHL — Easton, Talbot County, Maryland
→1985Wye Mill — Wye Mills, Queen Anne's County, Maryland
→1982Wye Town Farm House — Easton, Talbot County, Maryland
→1980Wyoming — Clinton, Prince George's County, Maryland
→1978Yarmouth — Cambridge, Dorchester County, Maryland
→1978Yellow Brick House — Bilvalve, Wicomico County, Maryland
→1985Young Men's and Young Women's Hebrew Association Building — Baltimore (Independent City), Baltimore County, Maryland
→1996Young--Sartorius House — Pocomoke City, Worcester County, Maryland
→2011Zion Lutheran Church — Baltimore, Baltimore County, Maryland
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