Former Owner
- Sewell Thomas1
- Sidney Graves Hamilton1
- Sigmund Ortel1
- Sir Thomas Brooke, 1st Baronet1
- Sonnyng, John1
- Sonnyng, William1
- St. Mary's College1
- Staatliche Museen zu Berlin1
- Stanley Morison1
- Stephen Butler Rare Books & Manuscripts1
- That Guy with the Books1
- Thomas E. Marston1
- Thomas F. Richardson1
- Thomas Gage1
- Thomas Mildmay1
- Thomas Sowthen1
- Thomas Wall1
- Vincenzo Paolino Missinisi1
- Vittorio Forti1
- Vladimir G. Simkhovitch1