Former Owner
- George Amos Poole21
- Robert Garrett21
- Lewis L. Gould18
- George Dunn16
- Thomas F. Richardson16
- William Bragge16
- Alfred Chester Beatty15
- Guglielmo Libri Carucci dalla Sommaja14
- Hoepli14
- Herschel V. Jones13
- Walter Sneyd13
- Charles Sumner12
- Giuseppe Martini12
- Howard Lehman Goodhart12
- Louis Charles Elson12
- Henry Huth11
- Johann Heinrich van Ess11
- Wilfrid Voynich11
- Ambroise Firmin Didot10
- Dropsie College for Hebrew and Cognate Learning10