- Oregon Agricultural College. Experiment Station100
- Oregon State Agricultural College. Agricultural Experiment Station36
- Potter, E. L. (Ermine Lawrence), 1884 15
- Hartman, Henry, 1889 12
- Powers, W. L. (Wilbur Louis), 188711
- Oregon State College. Extension Service9
- Robinson, R. H. (Reginald Heber), 1886 9
- Withycombe, Robert, 1880 8
- Forest Products Laboratory (U.S.)7
- Oregon Agricultural College. Extension Service7
- Hyslop, G. R. (George Robert), 1884 6
- Schuster, C. E. (Carl Ephraim), 1889 6
- Childs, Leroy, 1888 5
- Lovett, A. L. (Arthur Lester), 1885 19245
- Wiegand, Ernest Herman, 1886 5
- Zeller, S. M. (Sanford Myron), 1885 19485
- Brown, Gordon G. (Gordon George), 1887 4
- Bullis, D. E. (Deloss Everett), 1894 19844
- Johnston, W. W. (William Waters), 1896 4
- Reimer, F. C. (Frank Charles), 1881 4