Former Owner
- Michael Tomkinson1
- Morot1
- Nicholas Chevalier1
- Nicolas Rauch1
- Oliver R. Barrett1
- Otto Ege1
- Otto Vollbehr1
- Paul Gottschalk1
- Peter Arrell Brown Widener1
- Petrus Hofstede1
- Philadelphia Rare Books & Manuscripts Company1
- Philip C. Duschnes1
- Philip Hurd1
- Philip Kerr, 11th Marquess of Lothian1
- Philippe Hurault de Cheverny1
- Philippe de Béthune1
- Phillip J. Pirages Fine Books & Manuscripts1
- Phyllis Walter Goodhart Gordan1
- Pierre Gélis-Didot1
- Pierre de La Vacherie1