| Council on Library and Information Resources | General Support IV | 09/15/11 | $1,458,000 | Washington, DC, United States | Public Knowledge |
| Center for Research Libraries | Transforming Operations | 12/17/08 | $1,458,000 | Chicago, IL, United States | Public Knowledge |
| University of Cambridge | Matthew Parker on the Web - Phase III | 09/15/06 | $1,461,000 | Cambridge, United Kingdom | Public Knowledge |
| Stanford University | Linked Data for Libraries - Linked Data for Production | 03/10/16 | $1,466,000 | Stanford, CA, United States | Public Knowledge |
| Michigan State University | Enslaved: Peoples of the Historic Slave Trade | 12/07/17 | $1,472,000 | East Lansing, MI, United States | Public Knowledge |
| The Book Arts Press, Inc. | The Andrew W. Mellon Fellowship for Diversity, Inclusion & Cultural Heritage | 06/06/19 | $1,500,000 | Charlottesville, VA, United States | Public Knowledge |
| Folger Shakespeare Library | Independent Research Libraries Program | 04/04/92 | $1,500,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | Operational Support II | 06/01/17 | $1,500,000 | Washington, DC, United States | Public Knowledge |
| JSTOR | Initital Phase | 12/18/95 | $1,500,000 | New York, NY, United States | Public Knowledge |
| Cornell University | Linked Data for Libraries - LD4L Labs | 03/10/16 | $1,500,000 | Ithaca, NY, United States | Public Knowledge |
| Pierpont Morgan Library | Independent Research Libraries Program | 04/04/92 | $1,500,000 | New York, NY, United States | Public Knowledge |
| Newberry Library | Independent Research Libraries Program | 06/08/92 | $1,500,000 | Chicago, IL, United States | Public Knowledge |
| Commission on Preservation and Access | Program Support | 10/09/92 | $1,500,000 | Washington, DC, United States | Public Knowledge |
| Anthology of Recorded Music, Inc. | Database of American Music V | 12/12/05 | $1,500,000 | Brooklyn, NY, United States | Public Knowledge |
| American Antiquarian Society | Independent Research Libraries - Matching Endowment in Support of Core Functions | 04/04/92 | $1,500,000 | Worcester, MA, United States | Public Knowledge |
| Henry E. Huntington Library & Art Gallery | Independent Research Libraries Program | 04/04/92 | $1,500,000 | San Marino, CA, United States | Public Knowledge |
| Council on Library and Information Resources | Operational Support | 06/04/15 | $1,500,000 | Washington, DC, United States | Public Knowledge |
| Modern Language Association of America | MLA International Bibliography | 06/18/99 | $1,500,000 | New York, NY, United States | Public Knowledge |
| University of Chicago | Print on Demand | 09/21/01 | $1,500,000 | Chicago, IL, United States | Public Knowledge |
| LYRASIS | Establishing Organizational Home for CollectionSpace | 12/05/13 | $1,500,000 | Atlanta, GA, United States | Public Knowledge |
| University of Michigan | JSTOR - Journal Storage Project | 12/12/94 | $1,500,000 | Ann Arbor, MI, United States | Public Knowledge |
| University of Virginia | Preservation Program | 03/14/08 | $1,500,000 | Charlottesville, VA, United States | Public Knowledge |
| Harvard University | Latin American Studies - Libraries and Studies III | 09/18/08 | $1,500,000 | Cambridge, MA, United States | Public Knowledge |
| Ithaka Harbors, Inc. | Portico - E-Archive | 12/12/05 | $1,500,000 | New York, NY, United States | Public Knowledge |
| Institute of Museum and Library Services | REALM (REopening Archives, Libraries, and Museums) | 06/05/20 | $1,500,000 | Washington, DC, United States | Public Knowledge |
