- Oregon Agricultural College. Experiment Station198
- Oregon Agricultural College. Extension Service86
- Oregon Agricultural Experiment Station81
- Forest Products Laboratory (U.S.)66
- Oregon State Agricultural College. Extension Service45
- United States. Division Of Forestry23
- Lewis, C. I. (Claude Isaac), 1880 192422
- Oregon State College. Extension Service22
- Potter, E. L. (Ermine Lawrence), 1884 22
- Oregon State Agricultural College. Agricultural Experiment Station20
- Dryden, James, 1863 17
- Powers, W. L. (Wilbur Louis), 188717
- United States. Forest Service17
- Hopkins, A. D. (Andrew Delmar), 1857 194816
- Shaw, G. W. (George Wright), 1864 16
- Bouquet, A. G. B. (Arthur George Bristow), 1885 13
- French, H. T. (Hiram Taylor), 1862 13
- Oregon State Agricultural College13
- Et Al.12
- Geniza, Matthew12