Encyclopedias, Almanacs, Transcripts, and Maps
- Imperial Rivalry in the Americas
- Imperial Russian Geographical Society
- Imperial Russian Technological Society
- Imperial Troops
- Imperialism (Possession of Colonies) Issue
- Imperialism, Cultural
- Imperialism, Free Trade
- Imperialism, Gender and
- Imperialism, Liberal Theories of
- Imperialism, Marxist Theories of
- Imperialism: A German Viewpoint
- Imperialism: A Study, 1902
- Impressment
- Impressment
- In Enemy Hands: A Prisoner in North Korea
- Inca Empire
- Inca Empire
- Inca Garcilaso de la Vega
- Inca Mythology
- Incidents‐At‐Sea Treaty, U.S.–Soviet