Former Owner
- Morris H. Morgan2
- Oswald Carl Friedrich von Seilern und Aspang2
- Otto Vollbehr2
- Philip Hofer2
- Phillip J. Pirages Fine Books & Manuscripts2
- Phoebe Hearst2
- Pontigny Abbey2
- Prince Sadruddin Aga Khan2
- Quinton Edward Gurney2
- R. Stora and Company2
- Rabbinical Seminary Vienna2
- Robert Brodhead Honeyman2
- Robert de Hangest2
- Rosamond B. Loring2
- Sam Fogg Rare Books & Manuscripts2
- San Sisto, Piacenza2
- Sandbergs Bokhandel2
- Seymour Stocker Kirkup2
- Simhah Pinsker2
- Thomas Johnes2