Dictionaries, Thesauruses, Pictures, and Press Releases
- Analytical Philosophy
- Anarchists
- Ancestral Pueblo (Anasazi)
- Anesthesia, Discovery of
- Anglo-American Relations
- Animal Protective Societies
- Animal Rights Movement
- Annexation of Territory
- Answering Machines
- Antelope Case
- Anti-Imperialist League Platform (18 October 1899)
- Anti-Imperialists
- Anti-Masonic Movements
- Anti-Semitism: Overview
- Antibank Movement
- Anticolonialism
- Anticolonialism: Africa
- Anticolonialism: Latin America
- Anticolonialism: Middle East
- Anticolonialism: Southeast Asia