- Oregon Agricultural College. Experiment Station194
- Oregon Agricultural Experiment Station80
- Oregon Agricultural College. Extension Service78
- Forest Products Laboratory (U.S.)48
- Oregon State Agricultural College. Extension Service24
- Potter, E. L. (Ermine Lawrence), 1884 24
- United States. Division Of Forestry23
- Lewis, C. I. (Claude Isaac), 1880 192421
- Oregon State College. Extension Service21
- Oregon State Agricultural College. Agricultural Experiment Station20
- United States. Forest Service17
- Powers, W. L. (Wilbur Louis), 188716
- Shaw, G. W. (George Wright), 1864 16
- Oregon State Agricultural College13
- Robinson, R. H. (Reginald Heber), 1886 13
- French, H. T. (Hiram Taylor), 1862 12
- Oregon State Agricultural College. Experiment Station12
- Dryden, James, 1863 10
- Hartman, Henry, 1889 10
- Oregon Agricultural College10