- Oregon Agricultural College. Experiment Station22
- Sproles, Eric14
- Et Al.5
- Oregon Agricultural Experiment Station5
- United States. Department Of Agriculture. Forestry Division4
- United States. Division Of Forestry4
- United States. Forest Service4
- Cordley, A. B. (Arthur Burton), 1864 19363
- Fernow, B. E. (Bernhard Eduard), 1851 19233
- Hartman, Henry, 1889 3
- Hazelton, George Cochrane, 1868 19213
- Olson, Deanna H.3
- Robinson, R. H. (Reginald Heber), 1886 3
- Abatzoglou, John T.2
- Abbott, John S. C. (John Stevens Cabot), 1805 18772
- Allen, Andrew E.2
- Anderson, Anne J.2
- Banks, Michael A.2
- Blaustein, Andrew R.2
- Blumhagen, Rachel2