Former Owner
- H. P. Kraus (firm)2
- Henry Charles Lea2
- Lathrop C. Harper, Inc.2
- Leo Olschki2
- Luigi Celotti2
- Luigi Cora2
- Maggs Bros Ltd2
- Piero Ginori Conti2
- Robert Hoe III2
- Thomas F. Richardson2
- Acton Griscom1
- Alan G. Thomas1
- Albert Charles Robinson Carter1
- Alfred C. Chapin1
- Alvise Bochini1
- Andrea S.1
- Andrea Tessier1
- Antonio Ubaldini1
- Appiano family1
- Arno M. Voynich1