- Manuscripts, German4
- Manuscripts, Hebrew69
- Manuscripts, Italian4
- Manuscripts, Latin33
- Manuscripts, Latin (Medieval and modern)6
- Manuscripts, Medieval21
- Manuscripts, Prakrit1
- Manuscripts, Renaissance35
- Manuscripts, Sanskrit67
- Manuscripts, Turkish2
- Manuscripts--Prices5
- Mary Magdalene, Saint2
- Mary, Blessed Virgin, Saint6
- Mary, Blessed Virgin, Saint, in the liturgy1
- Massachusetts--Boston1
- Massachusetts--Wellesley1
- Maḥzor26
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Meditations1
- Menorah2