Former Owner
- Philip C. Duschnes1
- Philip C. Duschnes Rare Books & First Editions1
- Philip Hurd1
- Philippe Hurault de Cheverny1
- Philippe de Béthune1
- Phillip J. Pirages Fine Books & Manuscripts1
- Phyllis Walter Goodhart Gordan1
- Pierleone Leoni1
- Pierre Gélis-Didot1
- Pierre Pithou1
- Pierre de La Vacherie1
- Pietro Antonio Crevenna1
- Prosper Blanchemain1
- Raymond Berriot1
- René Antoine Thoué1
- Ricardo, Conde de Benahavis Heredia1
- Robert H. Sayre1
- Robert de Hangest1
- Ross Winans1
- Royaumont Abbey1