- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Manners and customs1
- Manuscripts, French1
- Manuscripts, Greek (Medieval and modern)1
- Manuscripts, Yiddish1
- Maritime1
- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marriage law1
- Martial1
- Mary, Queen of Scots, 1542-15871
- Massachusetts1
- Massachusetts--Northampton1
- Massachusetts--Wellesley1
- Maximilian I, Holy Roman Emperor, 1459-15191
- Maḥzor1
- Medallions (Decorative arts)1
- Medici, Alessandro de', 1510-15371
- Medici, Bernardo d'Alamanno de'1
- Medicine, Magic, mystic, and spagiric1