Former Owner
- Nettie Goldsmith Naumburg1
- Nicholas B. Scheetz1
- Norman H. Strouse1
- Oliver R. Barrett1
- Otto Orren Fisher1
- P. Pigeot1
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Durrieux1
- Paul Gottschalk1
- Paul Louis Feiss1
- Peter Arrell Brown Widener II1
- Peter Le Neve1
- Petrus Hofstede1
- Petrus Jensenius1
- Petrus Ysermans1
- Philadelphia Rare Books & Manuscripts Company1
- Philip Hofer1
- Philip Hurd1
- Philip Jacob Grangier1
- Philip Kerr, 11th Marquess of Lothian1