Holding Institution
- Bryn Mawr College34
- Williams College32
- Indiana University Bloomington24
- The Nelson-Atkins Museum of Art24
- Rutgers University23
- Western Michigan University22
- Saint Louis University17
- University of California, Davis15
- Vassar College14
- Grolier Club12
- General Theological Seminary9
- Conception Abbey and Seminary7
- New York Academy of Medicine7
- Jewish Theological Seminary of America5
- Science History Institute5
- Smith College5
- University of Dayton5
- Newberry Library & Western Michigan University3
- American Academy in Rome2
- Providence Public Library2