Former Owner
- Harry C. Koenig1
- Hispanic Society of America1
- Howard Lehman Goodhart1
- James & Mary Lee Tregaskis (Firm)1
- Johan Meerman1
- Leo Olschki1
- Lewis L. Gould1
- Linda Ehrsam Voigts1
- Lisa Kiser1
- Louis Charles Elson1
- Louis d'Harcourt1
- Léon Techener1
- Maggs Bros Ltd1
- Mary W. T. Dickinson1
- Matteo Luigi Canonici1
- Milton Fischmann1
- New York Academy of Medicine1
- Otto Vollbehr1
- Philibert-Charles-Marie Varenne de Fenille1
- Pius XI1