| Mapping Boston Foundation Inc | | Boston, MA | Local | 7 | 2024 | $3,100,507 |
| Westra Fam Charitable Tr | | Manchester, MA | Local | 4 | 2024 | $40,000 |
| The Lee L and Judith E Selwyn Found Ation | | Chestnut Hill, MA | Local | 4 | 2024 | $11,500 |
| Fleischner Family Charitable Foundation | | Newtown Sq, PA | Local | 3 | 2024 | $4,250 |
| Barr Foundation | | Boston, MA | Local | 1 | 2023 | $40,000 |
| Massachusetts Foundation for Humanities & Public Policy Inc | | Holyoke, MA | Local | 2 | 2023 | $22,567 |
| Mccall Fam Charitable Foundation Tr | | Winchester, MA | Local | 1 | 2023 | $1,000 |
| Ives Family Charitable Trust | | Boston, MA | Local | 2 | 2021 | $500 |
| Cutler-Stephens Foundation | | Charlestown, MA | Local | 1 | 2021 | $27 |
| Sherry and Alan Leventhal Family Foundation | | Boston, MA | — | 2 | 2020 | $287,847 |
| Trustees of Columbia University | | New York, NY | National | 1 | 2020 | $25,000 |
| Maclean Foundation | | Mundelein, IL | Local | 2 | 2019 | $65,000 |
| William E Schrafft & Bertha E Schrafft Charitable Trust | | Boston, MA | Local | 2 | 2019 | $20,000 |
| Justin & Genevieve Wyner Trust | | | Local | 2 | 2019 | $200 |
| Holzheimer Fund | | Chicago, IL | Local | 1 | 2019 | $100 |
| Council on Library and Information Resources | | Alexandria, VA | National | 1 | 2017 | $138,462 |