Former Owner
- Phillip J. Pirages Fine Books & Manuscripts15
- Phyllis Walter Goodhart Gordan1
- Pierleone Leoni1
- Pierre Gorman1
- Pierre Gélis-Didot2
- Pierre Picard le Jeune1
- Pierre Pithou1
- Pierre de La Vacherie1
- Pietro Antonio Crevenna1
- Pius XI1
- Placida Mahl1
- Pontigny Abbey1
- Prieuré Saint-Louis de Poissy1
- Prince Augustus Frederick, Duke of Sussex2
- Prosper Blanchemain1
- R. J. Bunck1
- R. Stora and Company2
- Raymond Berriot2
- Rendell1
- René Antoine Thoué1