District of Columbia - Role: Building
| Grant, Ulysses S., School |
| Grimke, Charlotte Forten, House |
| Halcyon House |
| Hamilton Hotel |
| Hampshire Garden Apartment Buildings |
| Harbour Square |
| Hardy, Rose Lees, School |
| Harewood Lodge |
| Harris & Ewing Photographic Studio |
| Harrison Apartment Building |
| Haw, John Stoddert, House |
| Healy Building, Georgetown University |
| Hebrew Home for the Aged and Jewish Social Service Agency |
| Hecht Company Warehouse |
| Heurich, Christian, Mansion |
| Heurich-Parks House |
| Hibbs, W. B., and Company Building |
| Highlands, The |
| Hillandale-Main Residence and Gatehouse |
| Hill Building |
| Hilltop Manor (The Cavalier Apartment Building) |
| Holt House |
| Holy Redeemer College |
| Holzbeierlein Bakery |
| Homestead Apartments, The |
| Hotel Washington |
| House at 2437 Fifteenth Street, NW |
| House of Mercy |
| Howard, Gen. Oliver Otis, House |
| Howard Theatre |
| Hubert H. Humphrey Building |
| Hughes, Charles Evans, House |
| Immaculate Conception Church |
| Indonesian Embassy |
| Ingleside |
| Interior Department Offices |
| Janney Elementary School |
| Japanese Embassy |
| Jefferson Apartment Building |
| Jesse Reno School |
| John Phillip Sousa Junior High School |
| Jost-Kuhn House |
| Kameny, Dr. Franklin E., House |
| Kelsey Temple Church of God in Christ |
| Kennedy-Warren Apartment Building |
| Keystone, The |
| King, Martin Luther, Memorial Library |
| Lafayette Apartment Building |
| Lafayette Building |
| Lafayette Elementary School |
| Langston, John Mercer, School |
| Langston Terrace Dwellings |
| Lansburgh, Julius, Furniture Co., Inc. |
| Law, Thomas, House |
| Lenthall Houses |
| Lewis, Edward Simon, House |
| Lexington, The |
| Lightfoot, George M., House |
| Lincoln Industrial Mission-Lincoln Memorial Congregational Church |
| Lincoln Theatre |
| Lindens, The |
| Lisner Auditorium |
| Lockkeeper's House, C & O Canal Extension |
| Lothrop Mansion |
| Lucy Diggs Slowe Elementary School |
| Luther Place Memorial Church |
| Luzon Apartment Building |
| MacFarland Junior High School |
| Macfeely, Gen. Robert, House |
| Main Sewerage Pumping Station, District of Columbia |
| Manhattan Laundry |
| Mansion at 2401 15th St., NW. |
| Mary McLeod Bethune Council House National Historic Site |
| Masonic Temple |
| Massachusetts Avenue Parking Shops |
| Maycroft, The |
| Mayfair Mansions Apartments |
| Mayflower Hotel |
| McCormick Apartments |
| McLachlen Building |
| Meeting House of the Friends Meeting of Washington |
| Memorial Continental Hall |
| Meridian House |
| Meridian Manor |
| Meridian Mansions |
| Methodist Cemetery, The |
| Metropolitan African Methodist Episcopal Church |
| Metropolitan Apartments |
| Metropolitan Club |
| Military Road School |
| Milton Hall |
| Miner Normal School |
| Moran Building |
| Morrison and Clark Houses |
| Morris Residence |
| Mount Zion United Methodist Church |
| M Street High School |
| Mullett Rowhouses |
| Munson Hall |
| Myrene Apartment Building |
Data from United States Park Service and Wikidata
