Former Owner
- John Ives1
- John M Cuthbert1
- John Swyntoun1
- Joseph Anton Koch1
- Joseph-Félix Allard1
- José Antonio Conde1
- Jérôme Bignon1
- Katheline Minnis1
- Katherine Somerset Wyttenbach Fenwick1
- Kloster Bredelar1
- Lathrop C. Harper, Inc.1
- Laurence Claiborne Witten II1
- Laurentius van der Torqel1
- Leigh Baker1
- Leo S. Olschki Editore1
- Libreria antiquaria Hoepli1
- Libreria antiquaria Mediolanum1
- Loftus Bland1
- Louis II, Count of Flanders1
- Ludwig Rosenthal's Antiquariaat1