Aardwolf
Aaron, Henry Louis "Hank"
Abalones
Aberdeen-Angus (cattle breed)
Abernathy, Ralph David
Abrams, Creighton Williams, Jr.
Abu Dhabi
Abyssinian War
Abzug, Bella
Acadia National Park
Acheson, Dean Gooderham
Adams, Abigail Smith
Adams, Ansel Easton
Adams, John
Adams, John Quincy
Adams, Johnny
Adams, Samuel
Addams, Jane
Aden
Aden Protectorate
Adenauer, Konrad
African Union
African Unity, Organization of
Agassi, Andre
Agency for International Development, United States
Agnew, Spiro Theodore
Agricola, Georgius
Air Force, United States
--Air Force Academy
Alabama
Alaska
Albany, Georgia
Alda, Alan
Alembic
(Tsar) Alexander I
Alexandria, Pharos at
Allen, Fred
Allen, Woody
Alley, Kirstie
Alligator, American
Allosaurus
American Birth Control League
--Sanger, Margaret Louise
American Gothic
--Wood, Grant
American Independent Party
American Library Association
American Philosophical Society
Ames, Fisher
Amin, Hafizullah
Amin Dada, Idi
Ampère, André-Marie
Anderson, Marian
Andreotti, Giulio
Andrew, His Royal Highness, The Duke of York
Angell, Charles
Angola
Angus (cattle breed)
Angwantibo
Anne, Her Royal Highness, The Princess Royal
Annelida
Anseriformes
Anteater, Giant
Anthony, Susan Brownell
Antoinette, Marie
Anza, Juan Bautista de
Aortic Valve
Appeal to Reason
Appert, Nicolas François
Arabian Horse
Arachnida
Arafat, Yasser
Arbuckle, Roscoe Conkling "Fatty"
Arches
Archimedes
Aristotle
Arizona
Arkansas
Arkwright, (Sir) Richard
Armadillo, Andean Hairy
Armadillo, Giant
Armadillo, Nine-Banded
Armadillo, Pink Fairy
Armenia
Armonica
Armstrong, Neil Alden
Army Signal Corps, United States
Artemis, Temple of
Arthropoda
Asner, Edward
Ass, Asian Wild
Astaire, Fred
Asteroids
Atlantis (space shuttle)
--Mir-Atlantis Mission, 1995
Atomic Bomb
--"Fat Man"
--"Little Boy"
--Operation Crossroads
Austen, Jane
Australopithecus africanus
--Dart, Raymond Arthur
Autry, Gene
Ayrshire (cattle breed)
