- Oregon Agricultural College. Extension Service8
- Oregon Agricultural College. Alumni Association3
- Oregon Agricultural Experiment Station3
- Fernow, B. E. (Bernhard Eduard), 1851 19232
- Minto, John, 1822 19152
- Oregon Agricultural College2
- Oregon Agricultural College. Experiment Station2
- Oregon. State Veterinarian2
- Shaw, G. W. (George Wright), 1864 2
- Tratman, E. E. R. (Edward Ernest Russell), 1863 2
- United States Department Of Agriculture Forest Service2
- United States. Division Of Forestry2
- United States. Forest Service2
- van Dersal, Samuel2
- Williams, Jessamine Chapman2
- Adamus, Paul R.1
- Ashe, W. W. (William Willard), 1872 19321
- Ayres, H. B. (Horace Beemer), B. 18561
- Baggett, James R.1
- Baucher, Marie1