Institution
- Arkansas Agricultural, Mechanical, and Normal College1
- Armed Forces Special Weapons Project (U.S.)1
- Arthur Rock and Company1
- Ashland Chemical Company1
- Aspen Technology, Inc.1
- Associated Dallas Laboratories 1
- Association for Research and Development in Chemical Informatics (ARDIC)1
- Association of the United States Army1
- Atec, Inc.1
- Atlanta University1
- Atlantic Coast Airlines, Inc.1
- Atlantic Refining Company1
- Atlantic Research Corporation1
- Atlantic Richfield Co.1
- Atmospheric Nitrogen Company1
- Auburn University1
- Augustana College (Rock Island, Ill.)1
- Australian National University4
- Autoclave Engineers, Inc.1
- Avacare, Incorporated1