Former Owner
- Philippe Desportes1
- Pius XI1
- Prieuré Saint-Louis de Poissy1
- Purchased ca. 2000 from a book dealer.1
- Ralph Thoresby1
- Renzo Rizzi libri antichi1
- Richard Heber1
- Richard Legh1
- Richard Maria Domville1
- Richard Wroe1
- Robert Brodhead Honeyman1
- Robert Davies1
- Robert de Hangest1
- Royaumont Abbey1
- Rudolph B. Gottfried1
- Samuel Whitaker Pennypacker1
- San Giorgio Monastery1
- Sant Pere de Rodes1
- Santi Giovanni e Paolo1
- Sarrià Capuchins1