- Oregon Agricultural Experiment Station27
- Oregon Agricultural College. Experiment Station14
- Pernot, E. F. (Emile Francis), 18599
- Withycombe, James, 1854 5
- Cordley, A. B. (Arthur Burton), 1864 19364
- Knisely, A. L. (Abraham Lincoln), 1865 4
- Indian War Veterans And Historical Society3
- Kent, F. L. (Fred Leroy), 1868 3
- Lake, E. R. (Edward Ralph), B. 18603
- Lewis, C. I. (Claude Isaac), 1880 19243
- Native Sons Of Oregon3
- Oregon Pioneer Association3
- Oregon State Agricultural College3
- Oregon State Agricultural College. Experiment Station3
- United States. Division Of Forestry3
- Coote, George, 1842 19082
- Oregon Agricultural College2
- Shaw, G. W. (George Wright), 1864 2
- Sudworth, George Bishop, 1862 19272
- United States. Forest Service2