Former Owner
- Marie de Albano1
- Martin Breslauer1
- Maurilio Morazio1
- Mercantile Library Company1
- Michael Bernays1
- Michael M. Zagayski1
- Monastero di Santo Spirito in Verona1
- Morris Jastrow, Jr.1
- Nanna Corbinello1
- Norza, Leon1
- Noël Pinelli1
- Omaha Public Library1
- Paolo Giovio1
- Paul Gottschalk1
- Paul Sabatier1
- Pauline Fore Moffitt1
- Pazzi family1
- Peter Eaton1
- Philip Augustus Hanrott1
- Philippe II de Croÿ1