Former Owner
- Mirmellus Arnandi1
- Molin1
- Monasterium sanctorum quadraginta martyrum (Treviso Italy)1
- Morton Davis Mitchell1
- Mrs. Turnbull1
- Murray Anthony Potter1
- Museo Cavaleri1
- Nathaniel Castleton Stephen Poyntz1
- Nathaniel G. Snelling1
- Nettie Goldsmith Naumburg1
- Neustift Abbey1
- Neuwerk Nunnery1
- Niccolò Albergati1
- Nicholas Bacon1
- Nicolai Briganti1
- Nicolaus de Monte Murro1
- Orlandus de Fatiis1
- Otto Ege1
- Otto Vollbehr1
- Owen D. Young1