Former Owner
- Jacob Suter1
- James Halliwell-Phillipps1
- Jean Baptiste Verdussen1
- Jean Budé1
- Jean Marie Michel Gasparoli1
- John Henry Gurney Jr.1
- John Ives1
- John Patteson1
- John R. Anderson & Co1
- Joseph Anton Koch1
- Juana I of Castile1
- Jérôme Bignon1
- Kloster Bredelar1
- Lathrop C. Harper, Inc.1
- Laurence Claiborne Witten II1
- Laurentius van der Torqel1
- Leigh Baker1
- Libreria antiquaria Mediolanum1
- Libreria la Bibliofila1
- Loftus Bland1