Former Owner
- Québriac family1
- R. A. Godwin-Austen1
- Raoul Léonor Lignerolles1
- Rendell1
- René Antoine Thoué1
- Rev. Frederick Collins Wilson1
- Ricardo, Conde de Benahavis Heredia1
- Richard Bennett1
- Richard Blount1
- Richard Linenthal1
- Robert Charles Winthrop1
- Robert H. Sayre1
- Robson & Kerslake1
- Rudolph B. Gottfried1
- Rush Hawkins1
- Ruth Cheney Streeter1
- Sabin1
- Sabina Sopheija Behren1
- Saluti, Tomasso, active 20th century1
- Sam Fogg Rare Books & Manuscripts1