- Dryden, James, 1863 9
- Oregon Agricultural College. Extension Service8
- Oregon State Agricultural College. Extension Service5
- Fox, F. E. (Frank Elmer), 1889 3
- Bennion, N. L. (Noel Lindsay), 1903 2
- Hossain, Md. Khaled2
- Oregon Agricultural College. Department Of College Extension2
- Oregon State College. Federal Cooperative Extension Service2
- Beckwith, T. D. (Theodore Day), 1879 19461
- Brown, B.1
- Fischer, Charles Merel1
- Harper, J. A. (James Arthur), 1916 1
- Ishimaru, Takashi1
- Lamb, C. C.1
- Lunn, A. G. (Alfred Gunn), 1883 1
- Oregon Agricultural College. Extension Division1
- Oregon State University. Agricultural Experiment Station1
- Oregon State University. Federal Cooperative Extension Service1
- Pankratz, John1
- Parker, J. E.1