Former Owner
- Walter James1
- Walter Paul Havens1
- Walter Sneyd1
- Warren C. Crane2
- Weingarten Abbey1
- Wilfrid Voynich1
- William Appleton1
- William Augustus White1
- William Bateman1
- William Bragge5
- William Caxton1
- William Gibbons Medlicott2
- William H. Robinson Ltd.1
- William Harcourt Hooper1
- William Horatio Crawford3
- William Inglis Morse1
- William King Richardson1
- William Morris2
- William S. Spaulding1
- William Taylor Scheide1