- History, Military1
- History, Modern1
- Hungary1
- Hurtado de Mendoza, García, Marqués de Cañete, 1535-16091
- Hymns1
- Ildephonsus, Saint, approximately 610-6671
- Indians of Central America--Missions1
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- Indians of Mexico--Legal status, laws, etc.1
- Indians of Mexico--Social life and customs1
- Indians of South America--Languages1
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- Interfaith relations1
- Isidore, of Seville, Saint, -6361
- Islam1
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- Italy--Finale Ligure1
- Italy--Genoa1