Former Owner
- Renzo Rizzi libri antichi1
- Rev. Frederick Collins Wilson1
- Ricardo, Conde de Benahavis Heredia1
- Richard Blount1
- Riddagshausen Abbey1
- Robert Charles Winthrop1
- Robert Forrer1
- Robert Hoe III45
- Robert Lehman5
- Robert de Hangest2
- Robert de Mol1
- Rolls1
- Royal Monastery of Saint Mary of Guadalupe1
- Rudolf Busch1
- S. Ereilter1
- Sabina Sopheija Behren1
- Saint-Riquier1
- Sam Fogg Rare Books & Manuscripts1
- Samuel Eliot1
- San Cristoforo alla Certosa (Church : Ferrara, Italy)1