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- Ildobrandini, Geronimo1
- Illumination of books and manuscripts1
- Illumination of books and manuscripts, Italian1
- Innocent VIII, Pope, 1432-14921
- Interest (Islamic law)1
- Investiture (Feudal law)1
- Iran--Dizfūl1
- Iran--Sabzevār (Khurāsān-i Raz̤avī)1
- Iraq1
- Iraq--Baghdad1
- Isabella I, Queen of Spain, 1451-15041
- Isagoge (Porphyry)1