Former Owner
- Sidney Graves Hamilton1
- Sion Segre Amar1
- Sir Henry Hope Edwardes, 10th Baronet1
- Sir Thomas Brooke, 1st Baronet1
- Solomon Hirschell1
- Solomon Pottesman1
- Stephen Butler Rare Books & Manuscripts1
- Susan B. Minns1
- Susan Coulter1
- Susan Minns1
- That Guy with the Books1
- Thomas E. Marston1
- Thomas G. Bergin1
- Thomas Gibson-Carmichael, 1st Baron Carmichael1
- Thomas Herbert, 8th Earl of Pembroke1
- Tobin Anderson1
- Ulrico Hoepli1
- Vatican Library1
- Vincenzo Paolino Missinisi1
- Walter Thomas Wallace1