- Islamic astrology2
- Islamic astronomy2
- Islamic cosmology2
- Islamic law--Interpretation and construction2
- Islamic occultism2
- Italy2
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār2
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)2
- Leather doublures2
- Manuscripts, European2
- Manuscripts, Latin (Medieval and modern)2
- Manuscripts, Oriental2
- Mathematics2
- Medicine, Persian2
- Meteorology2
- Military art and science2
- Munfarijah (Ibn al-Naḥwī, Yūsuf ibn Muḥammad)2
- Muṭarrizī, Nāṣir ibn ʻAbd al-Sayyid, 1144-1213. Miṣbāḥ2
- Natural history2
- New York (State)--New York2