Former Owner
- Luigi Cora1
- M. De La Tour1
- Mademoiselle de Malberghe1
- Marchese Porri-Carcani1
- Margaret Le Seigneur1
- Marguerite of Lorraine1
- Marie Thomas1
- Mario Maffei1
- Marion Lawrence1
- Martin Breslauer1
- Marvin-L. Colker1
- Mary Stanley, Countess of Derby1
- Mary, Queen of Scots1
- Mathias Schurer1
- Matthew Bloxam1
- Matthew Simpson Parkhurst1
- Maurice Johnson1
- Menno Hertzberger1
- Mercantile Library Company1
- Meschatin La Faye family1