- Manuscripts, Judeo-Arabic1
- Manuscripts, Oriental1
- Mary, Blessed Virgin, Saint1
- Massachusetts--Williamstown1
- Mathematics, Arab1
- Mathematics, Greek1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Mediterranean Region1
- Metaphysics1
- Metaphysics (Aristotle)1
- Meteorologica (Aristotle)1
- Meteorology1
- Monastic libraries1
- Naval art and science1
- New York (State)--New York1
- Nuzhat al-nuẓẓār fī ʻilm al-ghubār (Ibn al-Hāʼim, Aḥmad ibn Muḥammad)1
- Nīlakaṇṭha, active 16th century. Nīlakaṇṭhī1
- Palmistry1
- Parchment (Paper)1
- Parva naturalia (Aristotle)1