- Oregon State University. Agricultural Experiment Station11
- Oregon State University. Extension Service6
- Ripple, William J.5
- Bailey, John D.3
- Campbell, John L.3
- Kennedy, Patricia L.3
- Kennedy, Robert E.3
- Meigs, Garrett W.3
- Oregon Agricultural College. Alumni Association3
- Oregon State College. Agricultural Experiment Station3
- Shaw, David C.3
- United States. Forest Service3
- Zald, Harold S. J.3
- Adamus, Paul R.2
- Andrews, Lawrence S.2
- Anthony, Robert G.2
- Barth, John A.2
- Beschta, Robert L.2
- Bograd, Steven J.2
- Cardenas, Andres2