Former Owner
- Petrus Hofstede1
- Philadelphia Rare Books & Manuscripts Company1
- Philip C. Duschnes1
- Philip Hofer1
- Pierre Pithou1
- Poor Clares1
- Québriac family1
- R. Stora and Company1
- Renzo Rizzi libri antichi1
- Richard Priestley1
- Robert Forrer1
- Robert Lyle1
- Robert de Hangest1
- Rudolf Busch1
- Rush Hawkins1
- Saluti, Tomasso, active 20th century1
- San Barnaba Church1
- San Cristoforo alla Certosa (Church : Ferrara, Italy)1
- Sokol Books Ltd.1
- Stephen Butler Rare Books & Manuscripts1