- Oregon State Agricultural College. Agricultural Experiment Station127
- Oregon State University83
- Oregon State College. Agricultural Experiment Station63
- Wilster, G. H. (Gustav Hans), 189314
- Powers, W. L. (Wilbur Louis), 188712
- Price, F. E. (Frederick Earl), 1898 10
- Robinson, R. H. (Reginald Heber), 1886 9
- Besse, Ralph S. (Ralph Stephen), 1887 8
- Jones, I. R. (Idwal Ralph), 1898 8
- Brandt, P. M. (Philip Martin), 1888 7
- Hartman, Henry, 1889 7
- Kuhlman, G. W. (Gustav Wesley), 1894 7
- Potter, E. L. (Ermine Lawrence), 1884 7
- Selby, H. E. (Halbert Edgerton), 1896 7
- Wiegand, Ernest Herman, 1886 7
- Bullis, D. E. (Deloss Everett), 1894 19846
- Burrier, A. S. (Arnold Stewart), 1902 19386
- Childs, Leroy, 1888 6
- Dreesen, W. H. (William Henry), 1880 6
- Gorton, W. W. (William Winfield), 1907 6