Former Owner
- Theodore Newton Vail1
- Theodorico de Buckinstorff1
- Thomas Barber1
- Thomas Bateman1
- Thomas Boult1
- Thomas Dackomb1
- Thomas E. Marston1
- Thomas FitzRoy Phillipps Fenwick1
- Thomas Gardner1
- Thomas Grenville1
- Thomas H. Moynan1
- Thomas Holmes1
- Thomas Oliver Anderdon1
- Thomas Shadford Walker1
- Timothy Manlove1
- Turner Macan1
- University of Chicago Library1
- Walter Ashburner1
- Walter Raglan Hubbard1
- Walter Sneyd1