- Oregon State College. Federal Cooperative Extension Service333
- Oregon State Agricultural College. Extension Service177
- Oregon Agricultural College. Extension Service100
- Oregon. State Game Commission61
- Oregon State University. Extension Service59
- Oregon. Department Of Fish And Wildlife57
- Jackman, E. R. (Edwin Russell), 1894 47
- Oregon. Dept. Of Geology And Mineral Industries47
- Jenkins, Lawrence39
- Oregon State University. Cooperative Extension Service39
- Bouquet, A. G. B. (Arthur George Bristow), 1885 32
- Oregon State College. Engineering Experiment Station32
- Oregon Agricultural College. Experiment Station30
- Oregon State College. Agricultural Experiment Station27
- United States. Forest Service27
- Warren, Rex27
- Oregon State University. Federal Cooperative Extension Service26
- Breithaupt, L. R. (Le Roy), 1886 23
- Hatfield Marine Science Center22
- Bennion, N. L. (Noel Lindsay), 1903 18