- Forest Products Laboratory (U.S.)281
- Oregon Agricultural College. Experiment Station228
- Oregon Agricultural College. Extension Service189
- Oregon State Agricultural College. Extension Service103
- Oregon Agricultural Experiment Station85
- Dryden, James, 1863 28
- United States. Forest Service28
- Potter, E. L. (Ermine Lawrence), 1884 25
- Oregon State College. Agricultural Experiment Station24
- Lewis, C. I. (Claude Isaac), 1880 192423
- Oregon State College. Extension Service23
- United States. Division Of Forestry23
- Lovett, A. L. (Arthur Lester), 1885 192422
- Oregon Agricultural College. Extension Division22
- Oregon State Agricultural College. Agricultural Experiment Station21
- Hyslop, G. R. (George Robert), 1884 20
- Powers, W. L. (Wilbur Louis), 188720
- Bouquet, A. G. B. (Arthur George Bristow), 1885 19
- Hopkins, A. D. (Andrew Delmar), 1857 194819
- Oregon Agricultural College18