Former Owner
- Peter Christos1
- Peter Eaton2
- Peter Le Neve3
- Peter Ludwig4
- Peterborough Central Library1
- Petrus Giraud1
- Petrus Hofman Peerlkamp1
- Petrus Hofstede1
- Petrus Jensenius1
- Petrus Joseph Puccius1
- Petrus Leonardus1
- Petrus Martinotius1
- Petrus Molitor1
- Petrus Ysermans1
- Petrus de Thureyo1
- Pettini Libraria di Antonio Pettini1
- Philadelphia Museum of Art1
- Philadelphia Rare Books & Manuscripts Company1
- Philibert-Charles-Marie Varenne de Fenille1
- Philip Augustus Hanrott2