- Oregon State Agricultural College. Agricultural Experiment Station9
- Oregon Agricultural College. Experiment Station4
- Oregon State College. Extension Service3
- Engbretson, Albert Edward2
- Forest Products Laboratory (U.S.)2
- Johnson, R. P. A. (Robert Pilson Albert), 1888 2
- Meany, Edmond S. (Edmond Stephen), 1862 19352
- Oregon Agricultural College. Alumni Association2
- Oregon. Fish Commission2
- Polk County (Or.)2
- Boals, Gordon Porter1
- Bullis, D. E. (Deloss Everett), 1894 19841
- Dreesen, W. H. (William Henry), 1880 1
- Flandrau, Grace C. Hodgson1
- Fulton, B. B. (Bentley Ball), 1889 1
- Gibbons, William H. (William Henry), 1879 1
- Great Northern Railway Company (U.S.)1
- Hartman, Henry, 1889 1
- Hawley, Edna Tibbits1
- Hyslop, G. R. (George Robert), 1884 1