Former Owner
- Otto Orren Fisher1
- P. J. De Mat1
- Paul Durrieux1
- Petrus Hofstede1
- Philadelphia Rare Books & Manuscripts Company1
- Philip C. Duschnes Rare Books & First Editions1
- Philip Kerr, 11th Marquess of Lothian1
- Philip Sills1
- Philippe de Béthune1
- Pierleone Leoni1
- Pierre Gorman1
- Pierre Gélis-Didot1
- Pierre Picard le Jeune1
- Pierre Pithou1
- Placida Mahl1
- Pontigny Abbey1
- Prieuré Saint-Louis de Poissy1
- Rendell1
- Ricardo, Conde de Benahavis Heredia1
- Richard Bennett1