- United States. Division Of Forestry7
- Fernow, B. E. (Bernhard Eduard), 1851 19235
- Oregon Agricultural College. Experiment Station4
- United States. Department Of Agriculture. Forestry Division3
- Oregon State Agricultural College. Experiment Station2
- Tratman, E. E. R. (Edward Ernest Russell), 1863 2
- Butterworth, Hezekiah, 1839 19051
- Coville, Frederick V. (Frederick Vernon), 1867 19371
- Fairchild, David, 1869 19541
- Roth, Filibert, 1858 19251
- Simpson, John M. (John Millerd)1
- Sudworth, George B., 1862 19271
- Sudworth, George Bishop, 1862 19271