- Oregon Agricultural Experiment Station28
- Oregon Agricultural College. Experiment Station21
- Pernot, E. F. (Emile Francis), 185910
- United States. Division Of Forestry8
- Hopkins, A. D. (Andrew Delmar), 1857 19487
- Lewis, C. I. (Claude Isaac), 1880 19247
- Withycombe, James, 1854 7
- Knisely, A. L. (Abraham Lincoln), 1865 5
- Cordley, A. B. (Arthur Burton), 1864 19364
- Oregon State Agricultural College4
- Oregon State Agricultural College. Experiment Station4
- United States. Bureau Of Entomology4
- United States. Forest Service4
- Dryden, James, 1863 3
- Indian War Veterans And Historical Society3
- Kent, F. L. (Fred Leroy), 1868 3
- Lake, E. R. (Edward Ralph), B. 18603
- Native Sons Of Oregon3
- Oregon Pioneer Association3
- United States. Division Of Entomology3