Former Owner
- Michel Chasles1
- Morris H. Morgan1
- Norman Winestine1
- Paul Gottschalk1
- Percy Mordaunt Barnard1
- Petrus Jensenius1
- Petrus Leonardus1
- Petrus Martinotius1
- Petrus Ysermans1
- Phyllis Walter Goodhart Gordan1
- Pierre Pithou1
- Raphael de Mediolano1
- René Henry1
- Richard Hooker1
- Robert B. Honeyman1
- Robert H. Sayre1
- Ruth Cheney Streeter1
- S. S. Conant1
- Sabin1
- Sam Fogg Rare Books & Manuscripts1