- Marucelli, Francesco, 1625-17031
- Massachusetts--Boston1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Bernardo d'Alamanno de'1
- Medici, Carlo de'1
- Medici, House of1
- Medicinal plants1
- Medicine1
- Medicine, Greek and Roman1
- Meistersinger1
- Miscellanea1
- Monastic and religious life1
- Monasticism and religious orders1
- Monasticism and religious orders for women1
- Monasticism and religious orders--Rules1
- Monteny, John de, Sir1
- Mortgages1
- Music1
- Music theory1
- Naples (Kingdom)1