Former Owner
- Michael Tomkinson2
- Michael Wodhull1
- Michaeliskonvent1
- Michel Chasles1
- Michel Ferdinand d'Albert d'Ailly1
- Michel de Léon1
- Michele Amari1
- Michele Cavaleri2
- Michiel family1
- Middle Hill Rare Books & Manuscripts AB (Stockholm, Sweden)1
- Mikhail Golitsyn2
- Millard Meiss1
- Milton Fischmann27
- Minerva Kaiser1
- Minnis, Katherine1
- Mistrie, Sita Ram, Pandit1
- Mitchell Starrett Buck1
- Mobed Framji Fardunji Madan1
- Mobed Hormazdyar Mobed Khodabaksh1
- Mohammed bin Hamed bu Osman1