- Indians of Mexico--Legal status, laws, etc.1
- Indians of Mexico--Taxation1
- Inscriptions, Latin1
- Intellectual life1
- Isabella I, Queen of Spain, 1451-15041
- Islamic law1
- Italy--Milan1
- Jaymes, Diego1
- Jews--Persecutions1
- Juan II, King of Castile and Leon, 1405-14541
- Juana, of Austria, Princess of Portugal, 1535-1573--Correspondence1
- Judaism1
- Justa, Saint, -approximately 2871
- Justice, Administration of1
- Ladron de Guevara family1
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- Leocadia, Saint, -3031