- Lettering1
- Liturgics15
- Liturgics--Texts1
- Manuscripts3
- Manuscripts, European1
- Manuscripts, Italian5
- Manuscripts, Latin1
- Manuscripts, Latin (Medieval and modern)9
- Manuscripts, Medieval2
- Manuscripts, Renaissance4
- Massachusetts--Boston1
- Massachusetts--Wellesley1
- Medicine1
- Medicine, Greek and Roman--Manuscripts1
- Medicine--Formulae, receipts, prescriptions1
- Michigan--Kalamazoo1
- Missals1
- Missouri--Saint Louis2
- Monardes, Nicolás, approximately 1512-15881
- Monasticism and religious orders1