Former Owner
- Walter van Wijk1
- Warren C. Crane2
- Waters S. Davis1
- Wilfrid Voynich3
- Wilhelm Junk1
- William Bateman1
- William Bragge3
- William Bromley1
- William Chmurny5
- William Foyle1
- William H. Robinson Ltd.3
- William Harcourt Hooper1
- William Harris Arnold1
- William Henry Black1
- William Henry Stark2
- William Hepburn Buckler1
- William Horatio Crawford1
- William L. Clements1
- William Mahl1
- William Morris1