Former Owner
- Philippe Desportes1
- Pierleone Leoni1
- Piero Ginori Conti1
- Pierre Pithou1
- Pietro1
- Pietro Bembo1
- Pietro Odescalchi1
- Pugliese1
- R. F. Pain1
- R. H. Fenn1
- Raoul Chandon de Briailles1
- Raoul Léonor Lignerolles1
- Raphael de Mediolano1
- Renzo Rizzi libri antichi1
- Richard Ashurst Bowie1
- Richard Priestley1
- Robert Branthwait1
- Robert Charles Winthrop1
- Robert Forrer1
- Rolls1