- Manuscripts, European1
- Manuscripts, French3
- Manuscripts, German1
- Manuscripts, Italian4
- Manuscripts, Latin9
- Manuscripts, Latin (Medieval and modern)7
- Manuscripts, Medieval11
- Manuscripts, Renaissance9
- Mary, Blessed Virgin, Saint1
- Massachusetts--Boston2
- Meditations1
- Michigan--Kalamazoo1
- Monastic and religious life3
- Monastic and religious life of women1
- Monasticism and religious orders19
- Monasticism and religious orders for women2
- Monasticism and religious orders for women--Rules2
- Monasticism and religious orders--Rules9
- Music1
- Music theory1