- Oregon Agricultural College. Experiment Station24
- Oregon State Agricultural College. Agricultural Experiment Station7
- Schuster, C. E. (Carl Ephraim), 1889 5
- Stephens, David E. (David Edmund), 1879 4
- Bouquet, A. G. B. (Arthur George Bristow), 1885 3
- Oregon State College. Extension Service3
- Show, S. B. (Stuart Bevier), 1886 19633
- Forest Products Laboratory (U.S.)2
- Hartman, Henry, 1889 2
- Hyslop, G. R. (George Robert), 1884 2
- Kotok, E. I.2
- Lockley, Fred, 1871 2
- Meany, Edmond S. (Edmond Stephen), 1862 19352
- Mote, Don C. (Don Carlos), 1887 2
- Oregon Agricultural College. Alumni Association2
- Oregon Agricultural College. Extension Service2
- Oregon State College. Agricultural Experiment Station2
- Oregon. Department Of Forestry2
- Thompson, B. G. (Benjamin Garrison), 1891 2
- United States. Department Of Agriculture2