- Marginalia1
- Mathematics, Greek1
- Mathematics, Jewish1
- Maḥbūbī, Maḥmūd ibn ʻUbayd Allāh, -1344 or 1345. Wiqāyat al-riwāyah fī masāʼil al-Hidāyah1
- Medicine, Greek and Roman--Manuscripts1
- Medicine, Magic, mystic, and spagiric1
- Medicine, Persian1
- Medicine--Manuscripts1
- Midrash1
- Miniature books1
- Missals1
- Monarchy1
- Monastic and religious life of women1
- Monogrammed bindings1
- Morocco bindings1
- Music theory1
- Muslim scholars1
- Muḥammad, Prophet, -6321
- Navarre (Kingdom)1
- Navarre (Kingdom). Cortes1