- Legends2
- Linguistic analysis (Linguistics)2
- Literature1
- Liturgics11
- Manuscript waste1
- Manuscripts, French49
- Manuscripts, Latin5
- Manuscripts, Latin (Medieval and modern)2
- Manuscripts, Medieval25
- Manuscripts, Renaissance35
- Margaret, of Antioch, Saint1
- Marriage customs and rites, Medieval1
- Mary, Blessed Virgin, Saint1
- Massachusetts--Boston1
- Materia medica, Vegetable1
- Medicine3
- Medicine, Medieval1
- Medicine--Formulae, receipts, prescriptions2
- Michigan--Kalamazoo1
- Military art and science1