Former Owner
- Gilhofer & Ranschburg, Vienna1
- Giovan Pietro Arrivabene1
- Giovanni Perissinotti1
- Girolamo Cardina1
- Giulio Antonio Acquaviva1
- Giuseppe Canonici1
- Guglielmo Libri Carucci dalla Sommaja2
- H. P. Kraus (firm)1
- Harold Baillie Weaver1
- Hautecombe Abbey1
- Johann Heinrich van Ess1
- John Stanley, 18th Earl of Derby1
- Joseph-Félix Allard1
- Lathrop C. Harper, Inc.2
- Laurence Claiborne Witten II2
- Laurence William Hodson1
- Leicester Harmsworth1
- Leo S. Olschki Editore1
- Luigi Celotti1
- Maggs Bros Ltd1