Holding Institution
- Wellesley College26
- Indiana University Bloomington24
- Western Michigan University24
- The Nelson-Atkins Museum of Art22
- Rutgers University18
- Saint Louis University15
- Vassar College15
- University of California, Davis14
- Grolier Club13
- General Theological Seminary10
- Conception Abbey and Seminary7
- Jewish Theological Seminary of America5
- Science History Institute5
- University of Dayton5
- Newberry Library & Western Michigan University3
- American Academy in Rome2
- New York Academy of Medicine2
- University of California, Riverside2
- City College of New York1
- Columbia University Rare Book & Manuscript Library1