Maryland - Area of significance: Social History
| Abraham Hall |
| Aisquith Farm E Archeological Site |
| Anchorage, The |
| Arcadia |
| Ash Hill |
| Auburn House |
| Auchentoroly Terrace Historic District |
| Baltimore Federal Savings & Loan Association |
| Baltimore National Cemetery |
| Bare Hills House |
| Beall-Dawson House |
| Beall's Pleasure |
| Beckford |
| Belair |
| Belair Stables |
| Bel Alton High School |
| Bellefields |
| Bell Tower Building |
| Belvedere Hotel |
| Bennett-Kelly Farm |
| Bethesda Meetinghouse |
| Bethlehem Methodist Episcopal Church |
| Betterton Historic District |
| Beverly |
| Bloomingdale |
| Bohemian National Cemetery |
| Borderside |
| Brown, Moses, House |
| Brown's Arcade |
| Brunswick Historic District |
| Buck House |
| Bunker Hill |
| Burkittsville |
| Butchers Hill Historic District |
| Callahan, John, House |
| Calloway, Thomas J., House |
| Cannonball House |
| Cathedral Hill Historic District |
| Catoctin Mountain Park |
| Cecil Apartments |
| Centreville Armory |
| Chapline, William, House |
| Chautauqua Tower |
| Chestertown Armory |
| Cheverly Historic District |
| Christ Church Guilford |
| Churchville Presbyterian Church |
| Clara Barton National Historic Site |
| Clarksburg School |
| Clifton |
| Clifton Park |
| Cloisters, The |
| Coldstream Homestead Montebello Historic District |
| Content |
| Crisfield Armory |
| Cullen, Victor, School Power House |
| Daffin House |
| Darlington Historic District |
| Day Village Historic District |
| Denton Armory |
| Denton House |
| Dickeyville Historic District |
| Ditto Knolls |
| Dorsey-Palmer House |
| Douglass Place |
| Douglass Summer House |
| Eastern High School |
| East Monument Historic District |
| East New Market Historic District |
| Elkton Armory |
| Erlanger Buildings |
| Farm Content |
| Federal Hill Historic District |
| Federal Hill South Historic District |
| Fifth Regiment Armory |
| Frederick Armory |
| Friends Burial Ground |
| Garrett Building |
| Garrett Park Historic District |
| Glen Oak Hotel |
| Glenview Farm |
| Green's Inheritance |
| Green Spring Valley Historic District |
| Grief, L. and Bro., Inc. Manufactory |
| Hager House |
| Hagerstown Armory |
| Hampton National Historic Site |
| Hard Bargain Farm |
| Harrington |
| Harundale Presbyterian Church |
| Havre de Grace Lighthouse |
| Hilleary, William, House |
| Hirsch Residence |
| Hitt's Mill and Houses |
| Hollins-Roundhouse Historic District |
| Holy Cross Roman Catholic Church |
| Home of the Friendless |
| Homewood |
| Hood College Historic District |
| Hope House |
Data from United States Park Service and Wikidata
