Former Owner
- Giuseppe Martini15
- William Bragge15
- Hoepli14
- Johann Heinrich van Ess14
- Lathrop Colgate Harper13
- Walter Sneyd13
- Bruce P. Ferrini12
- Ernst F. Detterer12
- Howard Lehman Goodhart12
- Lisa Kiser12
- Richard Heber12
- Ambroise Firmin Didot11
- Herschel V. Jones11
- John Henry Ellis11
- Wilfrid Voynich11
- Charles Eliot Norton10
- Dropsie College for Hebrew and Cognate Learning10
- Eric J. Johnson10
- Philip Milburn10
- Phyllis Walter Goodhart Gordan10