- Manuscripts, Arabic1
- Manuscripts, English61
- Manuscripts, English (Middle)6
- Manuscripts, English (Old)1
- Manuscripts, European2
- Manuscripts, French4
- Manuscripts, Greek1
- Manuscripts, Hebrew2
- Manuscripts, Italian3
- Manuscripts, Latin2
- Manuscripts, Latin (Medieval and modern)16
- Manuscripts, Medieval15
- Manuscripts, Renaissance51
- Manuscripts, Scottish1
- Maps1
- Marbled paper bindings1
- Margaret, Queen, consort of James IV, King of Scotland, 1489-15411
- Mary, Queen of Scots, 1542-15872
- Massachusetts--Boston5
- Materia medica1