Former Owner
- Mrs. Turnbull1
- Muriel Agnes Fry1
- Museo Cavaleri1
- N. Pauli1
- Nathaniel Castleton Stephen Poyntz1
- Nathaniel G. Snelling1
- Neuwerk Nunnery1
- Niccolò Albergati1
- Nicholas Bacon1
- Nicholas Chevalier1
- Nicolas Fowle1
- Nicolas Rauch1
- Nicolas Yemeniz1
- Notre-Dame de Macourt monastery1
- Notre-Dame monastery (Ambert, France)1
- Omaha Public Library1
- Orlandus de Fatiis1
- Oswald Carl Friedrich von Seilern und Aspang1
- Otto Haas1
- Owen D. Young1