Former Owner
- Leonardus Martinotius1
- Leonhardus Cuntius1
- Lodovicus Saltariellus1
- Louis Bourguet1
- Louis XII of France1
- Luigi Arrigoni1
- Luigi Celotti1
- Luigi Cora1
- Maggs Bros Ltd2
- Mannheimer Hofbibliothek1
- Marcantonio Contarini1
- Marchese Linterno1
- Martin Breslauer1
- Mercantile Library Company1
- Molin1
- Moritz Joseph Johann von Dietrichstein1
- Morris Jastrow, Jr.1
- Oliver Henry Perkins1
- Otto Jahn1
- Paul Riant2