- Oregon State University. Extension Service4
- James, Robert L.2
- Oregon State College. Agricultural Experiment Station2
- United States. Forest Service. Northern Region2
- Adams, H. P. (Holyoke Purinton), 1922 1
- Barss, H. P. (Howard Phillips), 1885 1
- Burgett, D. M.1
- Claypool, Donald W., 1929 1
- Cook, R. James, 1937 1
- Fisher, Glenn C.1
- Gamroth, Michael J.1
- Hill, D. D. (Donald David), 1894 1
- Koepsell, Paul A.1
- Light, Sarah Elizabeth1
- Mcwhorter, Frank, 1896 19851
- Oregon Agricultural College. Experiment Station1
- Paulitz, Timothy1
- Ratanabhumma, Sanit, 1945 1
- Smiley, Richard W.1
- Sprague, Roderick, 1901 1