- Oregon State University. Agricultural Experiment Station[remove]250
- Korzan, Gerald E. (Gerald Earl)12
- Southern Oregon Agricultural Experiment Station9
- Oldfield, J. E., 1921 8
- Ralston, A. T. (Allen Thurman), 1915 8
- Adair, John, 1927 7
- Mellenthin, Walter M., 1920 7
- Stout, Floyd Madison, 1931 7
- Westigard, Peter H.7
- Besse, Ralph S. (Ralph Stephen), 1887 6
- Castle, Emery N.6
- Compton, O. C. (Oliver Cecil), 1903 6
- Sneva, Forrest6
- Taylor, Norton O.6
- Hyder, D. N.5
- Pumphrey, F. V. (Floyd Vance)5
- Boersma, L.4
- Church, D. C.4
- Edwards, John A.4
- Kennick, W. H. (Walter Herbert), 1920 4