Former Owner
- Josephine Widener Wichfield2
- Lathrop Colgate Harper2
- Laurence Claiborne Witten II2
- Luigi Celotti2
- Mary W. T. Dickinson2
- Messieurs Du Trieu2
- Michele Cavaleri2
- Nicolas Antoine Labbey de Billy2
- Otto Ege2
- Paul Riant2
- Peter Arrell Brown Widener2
- Peter Arrell Brown Widener II2
- Philip Kerr, 11th Marquess of Lothian2
- Phillip J. Pirages Fine Books & Manuscripts2
- Robert Brodhead Honeyman2
- Robert Forrer2
- Ross Winans2
- San Sisto, Piacenza2
- Sandbergs Bokhandel2
- Thomas Johnes2