Former Owner
- Robert Charles Winthrop1
- Robert Fyncham1
- Robert Wheeler Willson1
- Robert de Hangest1
- Roderick Terry1
- Rolls1
- Rosamond B. Loring1
- Rowland G. Hazard1
- Royal Monastery of Saint Mary of Guadalupe1
- Sabina Sopheija Behren1
- Saint Mihiel Abbey1
- Saint-Riquier1
- Samuel Eliot1
- Samuel Putnam Avery1
- San Sebastiano, Verona1
- Sant Pere de Rodes1
- Santa Grata inter vites1
- Santa Maria delle Grazie Church1
- Santa María de la Oliva1
- Schenck'sche Fide-Kommiss-Bibliothek1