Former Owner
- Sonnyng, William1
- Stephen Butler Rare Books & Manuscripts3
- Sydney Cockerell28
- Sydney Edward Lucas3
- Tammaro De Marinis1
- That Guy with the Books1
- Theodore Parker1
- Thomas Gage1
- Thomas Phillipps6
- Thomas Rodd2
- Thomas Wall1
- Thomas Woodward1
- Tomlinson, Robert1
- Van Dalem1
- Victor Mordechai Goldschmidt1
- Vincenzo Paolino Missinisi1
- Vittorio Forti1
- W. H. Allen & Co.1
- Walter Romeyn Benjamin1
- Walter Sneyd1