- Henry III, King of Castile and León, 1379-14061
- Heresy1
- Hermits1
- Hispaniola1
- Historiated initials1
- Historiography1
- History, Ancient1
- 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
- Indians of Central America--Taxation1
- Indians of Mexico--Legal status, laws, etc.1
- Indians of Mexico--Social life and customs1
- Indians of South America--Languages1
- Indians of South America--Social life and customs1
- Inscriptions1