Former Owner
- Lisa Kiser2
- Lodi Cathedral1
- Lodovicus Saltariellus1
- London School of Jewish Studies1
- Louis XII of France1
- Lucien Magne1
- Luigi Arrigoni1
- Luigi Celotti6
- Luigi Serra di Cassano1
- Maggs Bros Ltd6
- Mannheimer Hofbibliothek1
- Marcantonio V Borghese1
- Marcela Gabriela1
- Marchese Linterno1
- Marco Antonio Morosini1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Marilyn Carbonell1
- Martin Breslauer1
- Martin Picker2