Encyclopedias, Almanacs, Transcripts, and Maps
- Aché
- Achilleion
- Acholi
- Achumawi
- Acoma Pueblo
- Acordada
- Acordada, Revolt of
- Acosta García, Julio (1872–1954)
- Acosta León, Ángel (1932–1964)
- Acosta Ñu, Battle of
- Acosta, Cecilio (1818–1881)
- Acosta, José de (1540–1600)
- Acosta, Tomás (1744–1821)
- ACROLECT
- Acuerdo
- Acuff, Roy Claxton
- ACUTE ACCENT
- Adair, Paul Neal (“Red”)
- Adalat Party
- Adams, Brockman (“Brock”)