Curriculum - American History 1951-present
- Arab Members of OPEC Institute an Oil Embargo
- Arab Oil Embargo and Energy Crisis
- Arab Oil Embargo Precipitates Energy Crisis
- Arab Oil Producers Curtail Oil Shipments to Industrial States
- Ardrey’s The Territorial Imperative Argues That Humans Are Naturally Territorial
- The Argo Merchant Spills Oil Off the New England Coast
- Arnold and Gottlieb Publish The Wise Use Agenda
- Arnold Gesell
- Arsonists Burn Thirty Black Church in Eighteen Months
- Arthur Caswell Parker
- Arthur Holly Compton
- Arthur Miller
- Arvol Looking Horse
- Aserinsky Discovers Rapid Eye Movement (REM) in Sleep and Dreams
- Asian Pacific American Labor Alliance
- Assassination of Malcolm X
- Assassination of President Kennedy
- Assassinations of King and Kennedy
- Assisted-Suicide Specialist Kevorkian Is Found Guilty of Murder
- Astronauts Renovate Hubble Telescope
- Astronauts Repair the Hubble Space Telescope
- Astronomers Detect Black Hole
- Astronomers Detect Planets Orbiting Another Star
- Astronomers Discover an Unusual Ring System of Planet Neptune
- Astronomers Discover Solar System with Three Planets
- Astronomers Discover the Rings of the Planet Uranus
- Astronomers See Light from Object 12.2 Billion Light-Years Away
- AT&T Agrees to Be Broken Up as Part of an Antitrust Settlement
- AT&T and GTE Install Fiber-Optic Telephone Systems
- The AT&T Building Exemplifies Postmodernism
- AT&T Divestiture Takes Effect
- AT&T Is Ordered to Reduce Charges
- Atlantic City Legalizes Casino Gambling
- Atlantic Richfield Discovers Oil at Prudhoe Bay, Alaska
- Atlantic Salmon Return to the Connecticut River
- Atlas-Centaur Rocket Is Developed
- Atomic Energy Act
- Atomic-Powered Submarine Nautilus Is Launched
- Attica State Prison Riots
- The Audubon Society Opens Its New Headquarters Building
- The Autobiography of Malcolm X Is Published
- Automakers Introduce the Catalytic Converter
- Avon Begins Operations in China
- Awarding of an NFL Franchise to Houston Raises the Ante in Professional Sports
- Ayn Rand
- B. F. Skinner
- Baade Corrects an Error in the Cepheid Luminosity Scale
- The Bald Eagle Is Removed from the Endangered Species List
- Baldwin Voices Black Rage in The Fire Next Time
- The Banning of DDT Signals New Environmental Awareness
