- Ibn al-Hāʼim, Aḥmad ibn Muḥammad, d. 1412. Tuḥfat al-ṭullāb1
- Ibn al-Nafīs, ʻAlī ibn Abī al-Ḥazm, 1210 or 1211-1288. Mūjiz1
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- Illumination of books and manuscripts, Medieval1
- Illustrated works1
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- Ink stamps1
- Interdict (Canon law)1
- Investiture (Feudal law)1
- Iran--Dizfūl1
- Iran--Sabzevār (Khurāsān-i Raz̤avī)1
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- Iraq1
- Iraq--Baghdad1
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- Isabel, of Coimbra, Queen, consort of Afonso V, King of Portugal, 1432-14551