Former Owner
- Richard Heber13
- Albert C. Baugh12
- Charles Sumner12
- Foliophiles12
- Oliver Henry Perkins12
- Wilfrid Voynich12
- Frederick North, 5th Earl of Guilford11
- Henry Charles Lea11
- Herschel V. Jones11
- John D. Stanitz11
- Matteo Luigi Canonici11
- Mayer Sulzberger11
- Morris Jastrow, Jr.11
- Phyllis Walter Goodhart Gordan11
- Adolph Sutro10
- Ambroise Firmin Didot10
- Cyrus Adler10
- Ernst F. Detterer10
- Henry Drury10
- James Lyell10