Former Owner
- Paul Joseph Sachs1
- Paul Louis Feiss1
- Paul Viollet1
- Paul de Berthou1
- Pauline Fore Moffitt1
- Paulus de Graecus1
- Paurāṇika, Rāmacandrabhaṭṭa1
- Payne and Foss1
- Payre-Grolée-Virville family1
- Pazzi family1
- Pease, John William, 1820-19001
- Pedro Ferris1
- Pedro García de Montoya1
- Penzance Library1
- Perceval Lucas1
- Peretz ben Yehuda Mintz Ashkenazi1
- Peter Christos1
- Peterborough Central Library1
- Petrus Giraud1
- Petrus Hofman Peerlkamp1