- Hyslop, G. R. (George Robert), 1884 25
- Oregon Agricultural College. Extension Service6
- Oregon State Agricultural College. Extension Service6
- Oregon Agricultural College. Experiment Station5
- Oregon State College. Agricultural Experiment Station5
- Schoth, H. A. (Harry August), 1891 4
- Oregon State Agricultural College. Agricultural Experiment Station2
- Barss, H. P. (Howard Phillips), 1885 1
- Bouquet, A. G. B. (Arthur George Bristow), 1885 1
- Carpenter, W. S.1
- Engbretson, Albert Edward1
- Gilkey, Helen M., 1886 19721
- Harris, L. E. (Linden Eli), 1906 1
- Lovett, A. L. (Arthur Lester), 1885 19241
- Oregon State College. Federal Cooperative Extension Service1
- Stephens, David E. (David Edmund), 1879 1