Former Owner
- Joseph Barrois1
- Joseph Marie Sormani1
- Joseph-Félix Allard1
- Juana Mendel1
- Julie de Busnel1
- Karl Anton, Prince of Hohenzollern1
- Karl Leopold Strauven1
- Katharinenkirche, Nuremberg1
- Lathrop C. Harper, Inc.6
- Laurence Claiborne Witten II2
- Laurence Hilliard1
- Laurence William Hodson1
- Leicester Harmsworth1
- Leo S. Olschki Editore2
- Librairie Damascène Morgand1
- Lodi Cathedral1
- Louis XII of France1
- Louis d'Harcourt1
- Luigi Celotti2
- Maggs Bros Ltd4