| Council on Library and Information Resources | Digitizing Hidden Special Collections and Archives - Enabling New Scholarship Through Increasing Access to Unique Matierals | 03/12/15 | $4,000,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | Cataloging Hidden Special Collections and Archives | 03/13/14 | $4,000,000 | Washington, DC, United States | Public Knowledge |
| ARTstor, Inc. | Collection Development Fund III | 12/17/04 | $4,000,000 | New York, NY, United States | Public Knowledge |
| Council on Library and Information Resources | Cataloging Hidden Special Collections and Archives | 03/14/13 | $4,000,000 | Washington, DC, United States | Public Knowledge |
| Stanford University | Linked Data for Production: Pathway to Implementation | 05/31/18 | $4,000,000 | Stanford, United States | Public Knowledge |
| New York Public Library | William G. Bowen Endowment for Technology and Scholarship | 03/20/06 | $4,000,000 | New York, NY, United States | Public Knowledge |
| Council on Library and Information Resources | Special Collections Cataloging Program | 03/14/08 | $4,274,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | Special Collections Cataloging Program II | 03/13/09 | $4,303,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | Digitizing Hidden Special Collections and Archives | 12/08/16 | $4,340,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | Digitizing Hidden Special Collections and Archives | 12/10/15 | $4,340,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | Digitizing Hidden Collections | 12/11/20 | $4,415,000 | Arlington, VA, United States | Public Knowledge |
| Ithaka Harbors, Inc. | Capital Fund II | 10/01/04 | $4,500,000 | New York, NY, United States | Public Knowledge |
| Simon Fraser University | The Data Fluencies Project | 06/08/22 | $4,935,000 | Burnaby, BC, Canada | Public Knowledge |
| New York Public Library | Restructuring Assessment | 06/11/04 | $5,000,000 | New York, NY, United States | Public Knowledge |
| ARTstor, Inc. | General Support | 12/16/02 | $5,000,000 | New York, NY, United States | Public Knowledge |
| Ithaka Harbors, Inc. | General Support | 12/16/02 | $5,000,000 | New York, NY, United States | Public Knowledge |
| New York Public Library | Unrestricted Endowment | 06/08/98 | $5,000,000 | New York, NY, United States | Public Knowledge |
| ARTstor, Inc. | General Support | 12/15/03 | $5,000,000 | New York, NY, United States | Public Knowledge |
| Ithaka Harbors, Inc. | Capital Fund | 12/15/03 | $6,000,000 | New York, NY, United States | Public Knowledge |
| ARTstor, Inc. | General Support IV | 09/17/05 | $6,500,000 | New York, NY, United States | Public Knowledge |
| ARTstor, Inc. | General Support | 10/01/04 | $8,000,000 | New York, NY, United States | Public Knowledge |
| ARTstor, Inc. | Collection Development Fund V | 12/15/06 | $8,550,000 | New York, NY, United States | Public Knowledge |
| Council on Library and Information Resources | Digitizing Hidden Special Collections | 12/07/17 | $13,248,000 | Washington, DC, United States | Public Knowledge |
| Library of Congress | Of the People: Widening the Path | 12/11/20 | $15,000,000 | Washington, DC, United States | Public Knowledge |
