- Hymns--Devotional use1
- Ildephonsus, Saint, approximately 610-6671
- Illustrated works1
- India--Kerala1
- Indians of Central America--Languages1
- Indians of Central America--Missions1
- Indians of Central America--Taxation1
- Indians of Mexico--Religion1
- Indians of Mexico--Social life and customs1
- Indians of South America--Languages1
- Indians of South America--Legal status, laws, etc.1
- Indians of South America--Social life and customs1
- Indians of the West Indies1
- Inscriptions1
- Insertions (Production)1
- Interfaith relations1
- Isabel, of Coimbra, Queen, consort of Afonso V, King of Portugal, 1432-14551
- Isidore, of Seville, Saint, -6361
- Islam1
- Islamic law1