Former Owner
- Philip Hofer1
- Philippe II de Croÿ1
- Phillip J. Pirages Fine Books & Manuscripts3
- Phoebe Hearst1
- Pierleone Leoni1
- Piero Ginori Conti2
- Pierre Pithou1
- Pierre Tassel1
- Pietro Antonio Maffei1
- Pietro Girometti1
- Pius VI1
- Prediger (Schwäbisch Gmünd)1
- Prince Augustus Frederick, Duke of Sussex3
- Prince Sadruddin Aga Khan2
- Prospero Caffarelli1
- Puruṣottamadīkṣita1
- Qusṭanṭīn ibn Lūdūlf1
- R. Tolentino1
- Ramsau Monastery1
- Raoul Chandon de Briailles1