Former Owner
- Petrus Martinotius1
- Petrus Ysermans1
- Philip Carteret Webb1
- Philippe de Béthune1
- Phillip J. Pirages Fine Books & Manuscripts1
- Pierre Fraenkel1
- Pierre de La Vacherie1
- Pietro1
- Pietro Odescalchi1
- Prieuré Saint-Louis de Poissy1
- Prince Augustus Frederick, Duke of Sussex1
- Prince Sadruddin Aga Khan1
- Rafael Gomes1
- Ralph Thoresby1
- Raphael de Mediolano1
- René Antoine Thoué1
- René Henry1
- Richard Bennett1
- Richard Blount1
- Richard Halter1