Former Owner
- Peter Arrell Brown Widener2
- Peter Arrell Brown Widener II2
- Petrus Jensenius1
- Petrus Leonardus1
- Petrus Martinotius1
- Petrus Ysermans1
- Philip Hurd1
- Philippe Hurault de Cheverny1
- Pierre Gélis-Didot1
- Pierre Pithou1
- Pierre de La Vacherie1
- Preston A. Perry1
- Prince Augustus Frederick, Duke of Sussex1
- Pîrîzâde, Sayyid ʻAbd Allāh, Shaykh al-Islām1
- Ralph Thoresby1
- Raphael de Mediolano1
- René Antoine Thoué1
- René Henry1
- Richard Hooker1
- Richard Sackville1