Encyclopedias, Almanacs, Transcripts, and Maps
- Austro-Ottoman Wars
- Authority, Concept of
- Autobiography and Memoir
- Autobiography, U.S.
- Automobile, Origin of
- AVF
- Avril Phaedra Douglas Campbell
- AWACs and E‐3S
- Awards, Decorations, and Honors
- Ayatollah Ruhollah Musavi Khomeini
- Ayatollah Sayyid Ali Khamenei
- Azerbaijan and Azeris
- Azikiwe, Nnamdi
- Aznar, José Maria (b. 1953)
- Aztec Empire
- Aztec Empire
- Aztec Mythology
- B.F. Goodrich
- Babar the Conqueror
- Babel, Isaac Emmanuyelovich