- Oregon State University. Extension Service[remove]624
- Hart, John M. (John Mervyn), 1947 37
- Pacific Northwest Cooperative Extension36
- Washington State University. Extension26
- Southwest Oregon Forestry Intensified Research Program. Adaptive Phase25
- Pscheidt, Jay W.24
- United States. Department Of Agriculture23
- Washington State University. Cooperative Extension22
- Sullivan, Dan M. (Dan Matthew), 1954 20
- University Of Idaho. Cooperative Extension Service20
- University Of Idaho. Extension20
- Gardner, Ernest Hugh18
- Horneck, Donald Arthur16
- Huddleston, J. H. (James Herbert), 1942 13
- Peachey, Ed13
- Walton, Vaughn M.13
- Christensen, Neil Walter, 1944 12
- Jackson, T. L. (Thomas Lloyd), 1922 12
- Karow, Russell S.12
- Brewer, Linda J.11