- Oregon Agricultural College. Experiment Station47
- Hyslop, G. R. (George Robert), 1884 9
- Potter, E. L. (Ermine Lawrence), 1884 9
- Withycombe, Robert, 1880 9
- Oregon State College. Extension Service8
- Oregon State Agricultural College. Agricultural Experiment Station7
- Powers, W. L. (Wilbur Louis), 18875
- Hartman, Henry, 1889 3
- Johnston, W. W. (William Waters), 1896 3
- Lovett, A. L. (Arthur Lester), 1885 19243
- Oregon Agricultural College. Extension Service3
- Oregon State College. Agricultural Experiment Station3
- Reimer, F. C. (Frank Charles), 1881 3
- Stephens, David E. (David Edmund), 1879 3
- Forest Products Laboratory (U.S.)2
- Haley, Robert Murkland2
- Johnson, R. P. A. (Robert Pilson Albert), 1888 2
- Lockley, Fred, 1871 2
- Murneek, A. E. (Andrew Edward), 1888 2
- Oregon Agricultural College. Alumni Association2