Former Owner
- T. Triphook1
- T. Whitcombe Greene1
- Taschen von I. Kossel. R.1
- That Guy with the Books1
- Theodore Bruce Auctions1
- Theodore Williams1
- Thomas Appleby1
- Thomas Bateman1
- Thomas Bernardinus Braccioli1
- Thomas Blayds1
- Thomas Cole1
- Thomas Dare1
- Thomas Devynysh1
- Thomas Edwards1
- Thomas Egerton, 1st Viscount Brackley1
- Thomas Fairfax, 3rd Lord Fairfax of Cameron1
- Thomas G. Bergin1
- Thomas Gage1
- Thomas Gibson-Carmichael, 1st Baron Carmichael1
- Thomas Herbert, 8th Earl of Pembroke1