Former Owner
- Paul Gottschalk1
- Paul Gruel1
- Paul de Berthou1
- Peter Le Neve1
- Peter Ludwig1
- Petrus Hofstede1
- Petrus de Thureyo1
- Pettini Libraria di Antonio Pettini1
- Philibert-Charles-Marie Varenne de Fenille1
- Philip C. Duschnes1
- Philip C. Duschnes Rare Books & First Editions1
- Philip Hofer1
- Pierre Pithou1
- Pietro Antonio Crevenna1
- Pietro Antonio Maffei1
- Pietro Canal1
- Pietro Giometti1
- Pius VI1
- Québriac family1
- R. J. Bunck1