Former Owner
- Nicolas Antoine Labbey de Billy1
- Nicolas Moreau1
- Notre-Dame monastery (Ambert, France)1
- Noël Pinelli1
- Oliver Henry Perkins1
- Oliver R. Barrett1
- Omaha Public Library1
- Otto Ege5
- Otto Jahn1
- Otto Orren Fisher2
- Otto Schäfer1
- P. Desq1
- Paolo Giovio1
- Paul III1
- Paul Riant13
- Peretz ben Yehuda Mintz Ashkenazi1
- Peter Ludwig2
- Philip Augustus Hanrott1
- Philip Hurd1
- Philip Kerr, 11th Marquess of Lothian1