| Morris and Gwendolyn Cafritz Foundation | | Washington, DC | Local | 5 | 2024 | $145,000 |
| Mount Vernon Ladies Association of the Union | | Mount Vernon, VA | Local | 7 | 2024 | $105,000 |
| Corina Higginson Trust | | Charlott Hall, MD | Local | 5 | 2024 | $53,500 |
| National Park Trust Inc | | Rockville, MD | National | 3 | 2024 | $42,500 |
| Dodge Charitable Trust | | Mechanicsvlle, MD | National | 7 | 2024 | $27,700 |
| Climate Conservation | | Bozeman, MT | National | 1 | 2024 | $25,000 |
| Maryland Historical Society | | Baltimore, MD | Local | 3 | 2023 | $30,000 |
| Crescent Cities Charities Inc | | Oxon Hill, MD | National | 3 | 2022 | $30,000 |
| National Trust for Historic Preservation in the United States | | Washington, DC | National | 1 | 2022 | $10,000 |
| National Park Foundation | | Washington, DC | National | 3 | 2021 | $128,000 |
| Rock Creek Conservancy Inc | | Bethesda, MD | — | 1 | 2020 | $9,725 |
| National Society of the Daughters of the American Revolution | | Washington, DC | National | 1 | 2020 | $5,000 |
| Francis E and Mildred W Gardiner Jr Family Foundation | | Annapolis, MD | Local | 1 | 2020 | $250 |
| Maryland Humanities Council Inc | | Baltimore, MD | Local | 2 | 2019 | $14,000 |
| Nora Roberts Foundation Inc | | Glenn Dale, MD | National | 1 | 2019 | $5,000 |
| Brown Advisory Charitable Foundation Inc | | Baltimore, MD | Local | 1 | 2019 | $100 |