- Local officials and employees2
- Lutheran Church2
- Madrigals, Italian2
- Manicules2
- Manners and customs2
- Manuscript fragments2
- Manuscripts, Dutch2
- Manuscripts, Nahuatl2
- Maps2
- Marghīnānī, Maḥmūd ibn Aḥmad, 1156 or 1157-1219 or 1220. Muḥīṭ al-Burhānī fī al-fiqh al-Nuʻmānī.--Abridgment2
- Marriage2
- Mary, Blessed Virgin, Saint2
- Mary, Queen of Scots, 1542-15872
- Masnavis, Turkish2
- Medici, Alessandro de', 1510-15372
- Medici, Luisa de'2
- Medicine, Persian2
- Medicine--Study and teaching2
- Meditations2
- Metaphysics2