- Oregon State College. Extension Service5
- Forest Products Laboratory (U.S.)4
- Oregon State College. Agricultural Experiment Station4
- Pacific Northwest Forest Experiment Station (Portland, Or.)4
- Richards, D. E. (Dale Everette), 1892 3
- Seborg, C. O.3
- United States. Forest Service3
- Automobile Club Of Oregon2
- Baird, Parker K.2
- Forest Research Council Of The Pacific Northwest2
- Mcdaniel, E. B.2
- Oregon State Agricultural College. Agricultural Experiment Station2
- Oregon State College. Federal Cooperative Extension Service2
- Oregon State Planning Board2
- Simmonds, Forrest A.2
- Stephens, David E. (David Edmund), 1879 2
- Adams, Orville Daniel, 1889 1
- Appleton, John B. (John Bargate)1
- Baldwin, Willis Ambrose1
- Ballard, Carmen1