Former Owner
- Mary, Queen of Scots1
- Matthew Bloxam1
- Matthew Donadski1
- Matthew Simpson Parkhurst1
- Maurice Johnson1
- Menno Hertzberger1
- Mercantile Library Company1
- Meschatin La Faye family1
- Michaeliskonvent1
- Morot1
- Mrs. E.J. Hooper1
- Museo Cavaleri1
- Nanna Corbinello1
- Nicolas Antoine Labbey de Billy1
- Oliver R. Barrett1
- Otto Ege1
- P. Pigeot1
- Paolo Vimercati Sozzi1
- Paul Gottschalk1
- Petrus Jensenius1