Former Owner
- Robert B. Honeyman1
- Robert Benson, fl. Ca, 18th c.1
- Robert Brodhead Honeyman1
- Robert Garrett1
- Robert Ranshaw1
- Robert Samuel Turner1
- Robert Treswell1
- Robert Walker1
- Robert de Mol1
- Rudolphus Rasser Donatus1
- Sam Fogg Rare Books & Manuscripts1
- Samuel Allan1
- Samuel H. Putnam1
- Samuel Putnam Avery1
- San Sebastiano, Verona1
- Santa Caterina1
- Santander San Juan, Simon de, -17911
- Sebastiano Calvi1
- Sidney Graves Hamilton1
- Sigmund Ortel1