Former Owner
- Wilfrid Voynich12
- Ambroise Firmin Didot11
- Charles Eliot Norton11
- Henry Yates Thompson11
- Imre De Vegh11
- James Lyell11
- Phyllis Walter Goodhart Gordan11
- William Augustus White11
- John Dozier Gordan10
- Leo S. Olschki Editore10
- Luigi Celotti10
- Mary W. T. Dickinson10
- E. Dwight Church9
- Gordon A. Block Junior9
- Karl Wilhelm Hiersemann9
- Thomas FitzRoy Phillipps Fenwick9
- William Young Ottley9
- Henry William Poor8
- Hermann Suchier8
- Homer Lewis Bartlett8