- United States. Forest Service. Pacific Northwest Region. Thirty Year Club31
- United States. Forest Service26
- Kinch, Michael P.4
- Oregon State University. Extension Service4
- Mattoon, Wilbur R. (Wilbur Reed), 1875 19413
- Bowers, S. (Steven Clay)2
- Gibson, Kenneth E.2
- Graves, Henry Solon, 1871 19512
- Kennedy, Patricia L.2
- Oregon State University. Agricultural Experiment Station2
- Oregon State University. College Of Forestry2
- Oregon State University. Forest Research Laboratory2
- Osborn, Katherine H., 1906 2
- Sirmon, Jeff M.2
- Stipe, Lawrence E.2
- United States. Department Of Agriculture2
- United States. Department Of Agriculture. Forestry Division2
- United States. Division Of Forestry2
- United States. Forest Service. Northern Region. State & Private Forestry2
- United States. Forest Service. Public Affairs Office2