Former Owner
- Lathrop Colgate Harper1
- Lorenzo Antonio da Ponte1
- Luigi Arrigoni1
- Luini, Pacifico (Franciscan priest), active 19th century1
- M. Favia del Core1
- Marcantonio Contarini1
- Marcela Gabriela1
- Marchese Linterno1
- Maria Ludovica Favia del Core Borromeo1
- Marie Cleophe de Sollario1
- Marie de Albano1
- Martin Breslauer1
- Mercantile Library Company1
- Michael Bernays1
- Monastero di Santo Spirito in Verona1
- Morris Jastrow, Jr.1
- Nanna Corbinello1
- Noël Pinelli1
- Over, Watson1
- Paul Gottschalk1