- Oregon State University. Extension Service476
- Pacific Northwest Cooperative Extension58
- United States. Department Of Agriculture50
- Washington State University. Cooperative Extension50
- University Of Idaho. Cooperative Extension System30
- Oregon State University. Agricultural Experiment Station26
- Koester, Ardis W.22
- University Of Idaho. Extension21
- Washington State University. Extension21
- University Of Idaho. Cooperative Extension Service18
- Burrill, L. C.17
- Hart, John M. (John Mervyn), 1947 17
- Morrow, Alice Mills16
- Moum, J. N.13
- Allen, J. S.12
- Schmall, Vicki L.10
- de Szoeke, Roland A.9
- Dray, Tevian9
- Fisher, Glenn C.8
- Lewis, Margaret8