Former Owner
- Thomas Richardson1
- Thomas Shadford Walker1
- Thomas Thorpe3
- Thomas Windus1
- Thomon Simon Jones1
- Timothy Manlove1
- University of Chicago Library1
- Vatican Library1
- Volpi1
- W. J. Gilbert5
- W. P. Hall Walker1
- Walter Ambrose Heath Harding1
- Walter Paul Havens2
- Walter Raglan Hubbard1
- Walter Sneyd3
- Warren C. Crane4
- Weiss & Co.1
- Wild, Henry D.1
- Wilfrid Voynich2
- William Bateman1