- Oregon Agricultural College. Experiment Station115
- Forest Products Laboratory (U.S.)58
- Oregon Agricultural College. Extension Service45
- Oregon State Agricultural College. Agricultural Experiment Station41
- Oregon State College. Extension Service23
- Hyslop, G. R. (George Robert), 1884 18
- Potter, E. L. (Ermine Lawrence), 1884 17
- Oregon State Agricultural College. Extension Service15
- Hartman, Henry, 1889 13
- Oregon State College. Agricultural Experiment Station13
- Robinson, R. H. (Reginald Heber), 1886 12
- Powers, W. L. (Wilbur Louis), 188711
- Lovett, A. L. (Arthur Lester), 1885 19249
- Withycombe, Robert, 1880 9
- Mote, Don C. (Don Carlos), 1887 8
- Schuster, C. E. (Carl Ephraim), 1889 8
- Bullis, D. E. (Deloss Everett), 1894 19847
- Barss, H. P. (Howard Phillips), 1885 6
- Childs, Leroy, 1888 6
- Ritter, George J.6