- Oregon Agricultural College. Experiment Station203
- Oregon Agricultural College. Extension Service100
- Oregon Agricultural Experiment Station83
- Forest Products Laboratory (U.S.)53
- Oregon State Agricultural College. Extension Service45
- Potter, E. L. (Ermine Lawrence), 1884 24
- United States. Division Of Forestry23
- Lewis, C. I. (Claude Isaac), 1880 192422
- Oregon State College. Agricultural Experiment Station22
- Oregon State College. Extension Service22
- Oregon State Agricultural College. Agricultural Experiment Station20
- United States. Forest Service19
- Powers, W. L. (Wilbur Louis), 188718
- Shaw, G. W. (George Wright), 1864 16
- Dryden, James, 1863 15
- Et Al.14
- Robinson, R. H. (Reginald Heber), 1886 14
- French, H. T. (Hiram Taylor), 1862 13
- Oregon State Agricultural College13
- Mote, Don C. (Don Carlos), 1887 12