Former Owner
- 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
- Philip C. Duschnes4
- Philip C. Duschnes Rare Books & First Editions1
- Philip Carteret Webb1
- Philip Hofer3
- Philip Hurd1
- Philip III the Good1
- Philip Jacob Grangier1
- Philip Kerr, 11th Marquess of Lothian3
- Philip Milburn10
- Philip Robinson1
- Philip Sills1