Former Owner
- Joost Ritman1
- Joseph Barrois2
- Juana Mendel1
- Judith Lady Montefiore College1
- Julia Burgess1
- Katherine Somerset Wyttenbach Fenwick1
- Lathrop C. Harper, Inc.2
- Lathrop Colgate Harper2
- Lawrence J. Schoenberg7
- Leo Olschki3
- Lionardo di Paolo Adimari1
- Lorenzo Antonio da Ponte1
- Ludwig Rosenthal's Antiquariaat1
- Luigi Arrigoni1
- Luigi Celotti2
- Luigi Cora2
- Luis Escobet1
- M. Favia del Core1
- Maggs Bros Ltd2
- Marcantonio Contarini1