Former Owner
- Sister Lysebet van Karnehe1
- St. Mary's College1
- Stephen Butler Rare Books & Manuscripts1
- Stuart Rose1
- Susan B. Minns4
- Susan Minns1
- Swann Galleries1
- Sydney Cockerell2
- T. Royer1
- T. Whitcombe Greene1
- T.L. Hartung1
- That Guy with the Books1
- Theodore Newton Vail1
- Theodore Williams1
- Thomas F. Richardson6
- Thomas Gage1
- Thomas Mildmay1
- Thomas Phillipps1
- Thomas Richardson1
- Vittorio Forti1