Former Owner
- Nicolas Yemeniz1
- Notre-Dame monastery (Ambert, France)1
- Oliver R. Barrett1
- Omaha Public Library1
- Otto Vollbehr1
- Owen D. Young1
- P. Pigeot1
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Gottschalk1
- Paul Gruel1
- Paul Louis Feiss1
- Paul Sabatier1
- Peter Le Neve1
- Petrus Hofstede1
- Petrus Jensenius1
- Petrus Ysermans1
- Philadelphia Rare Books & Manuscripts Company1
- Philip C. Duschnes1
- Philip Hofer1
- Philip Hurd1