Creator
- Anschütz, Richard 1852-19371
- Arrhenius, Maria Elisabet, 1871-19571
- Arrhenius, Olof Wilhelm, 1896-19771
- Arrhenius, Svante, 1859-192787
- Arthur Rodberg A.-G.1
- Aschner, Bernard1
- Askenasy, Paul, 1869-19381
- Associated Press1
- Association of New York Scientists14
- Association of Oak Ridge Engineers and Scientists29
- Association of Scientists for Atomic Education6
- Auerbach, Richard J.1
- Aufbau (New York, N.Y.)6
- Automatic Finder Corporation1
- Axelsson, George1
- B., Mr.1
- B.G. Teubner (Firm)1
- Babson, Roger Ward, 1875-19671
- Backer, Benno1
- Baczewski, Alexander1