Former Owner
- Phoebe Hearst1
- Pierleone Leoni1
- Pierre Pithou1
- Pierre Tassel1
- Pietro Antonio Maffei1
- Pius VI1
- Prediger (Schwäbisch Gmünd)1
- Prospero Caffarelli1
- Puruṣottamadīkṣita1
- Qusṭanṭīn ibn Lūdūlf1
- R. Tolentino1
- Ramsau Monastery1
- Raoul Chandon de Briailles1
- Raoul Léonor Lignerolles1
- Raphael Yitzchak Yisrael1
- Raymond Oliver1
- Richard McKeon1
- Richard N. Frye1
- Robert Brodhead Honeyman1
- Robert Dallas1