Former Owner
- St. Michael's Church1
- Stanley Morison1
- Stephen Butler Rare Books & Manuscripts1
- Stiftsbibliothek Kremsmünster1
- Sébastien de Rosmadec, marquis de Molac1
- T. Triphook1
- Tammaro De Marinis1
- Taschen von I. Kossel. R.1
- That Guy with the Books1
- Thomas Bernardinus Braccioli1
- Thomas Blayds1
- Thomas Cole1
- Thomas E. Marston1
- Thomas Edwards1
- Thomas F. Richardson1
- Thomas Fairfax, 3rd Lord Fairfax of Cameron1
- Thomas Gage1
- Thomas Gibson-Carmichael, 1st Baron Carmichael1
- Thomas Moore1
- Thomas Stonor, 3rd Baron Camoys1