Institution
- 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
- Autoclave Engineers, Inc.1
- Avacare, Incorporated1
- Avicon, Inc.1
- BIIS Corporation 1
- BP America (Firm)1
- Babcock & Wilcox Company1
- Babson Research Laboratories1
- Baird Associates1
- Bakelite Company1