- Abernathy, Charles O. (Charles Owen), 1941-2
- Abrams, Charles F.1
- Agricultural Research Council of Central Africa1
- Agricultural and Mechanical College of Texas. Dept. of Agricultural Engineering1
- Agronomy Research Reports (North Carolina Agricultural Experiment Station)8
- Akehurst, B. C.1
- Allen, A. B.2
- Allen, Jack1
- Allied Chemical Corporation1
- Alsbrook, Bill1
- American Machine and Foundry Company1
- American Railway Association1
- American Seed Trade Association1
- American Society of Agricultural Engineers11
- American Society of Agronomy7
- American Soybean Association6
- American Tobacco Company1
- Anderson, Donald B., 1899-19941
- Ansul Company1
- Arndt, J. B.1