Former Owner
- Nicholas B. Scheetz1
- Oliver Henry Perkins2
- Otto Ege2
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Gottschalk1
- Peter Arrell Brown Widener2
- Peter Arrell Brown Widener II1
- Peter Le Neve1
- Petrus Hofstede1
- Petrus Jensenius1
- Petrus Ysermans1
- Philadelphia Rare Books & Manuscripts Company1
- Philip Hofer1
- Philip Hurd1
- Philip van Alfen1
- Philippe Hurault de Cheverny1
- Phillip J. Pirages Fine Books & Manuscripts1
- Pierre Gélis-Didot1
- Québriac family1
- René Antoine Thoué1