Former Owner
- William S. Spaulding1
- William Salloch193
- William Stuart1
- William Targ1
- William Taylor Scheide9
- William Thynne1
- William Trench1
- William Tyssen-Amherst, 1st Baron Amherst of Hackney1
- William Wentworth-Fitzwilliam, 7th Earl Fitzwilliam1
- William Wix1
- William Wynham1
- William Young Ottley9
- Winifred A. Myers Autographs Ltd6
- Winslow Lewis1
- Wolfgang G. Scholz1
- Wolfgang Sigismund, Graf von Gallenberg1
- Wolfgang Täxer1
- Wolfman, Wm1
- Woodward-Ruth Collection1
- Written in Flanders in the second quarter of the fifteenth century. A clipping accompanying the book from the GTS(?) Bulletin June 1968 says that Dr. John Plummer of the Pierpont Morgan Library identified the book1