- Oregon Agricultural College. Experiment Station39
- Lewis, C. I. (Claude Isaac), 1880 19248
- Oregon Agricultural College. Extension Service8
- Oregon Agricultural College7
- Potter, E. L. (Ermine Lawrence), 1884 5
- Powers, W. L. (Wilbur Louis), 18875
- Allen, R. W. (Ralph Wilmer), 1885 4
- Kraus, E. J. (Ezra Jacob), 1885 4
- Bexell, J. A. (John Andrew), 1867 19383
- Childs, Leroy, 1888 3
- Gardner, Victor Ray, 1885 3
- Ladd & Bush Bankers3
- Magness, J. R. (John Robert), 1894 3
- Oregon Agricultural College. Extension Division3
- Scudder, H. D. (Henry Desborough), 1881 3
- Bouquet, A. G. B. (Arthur George Bristow), 1885 2
- Brown, F. R. (Frank Ross)2
- Conover, Charles Tallmadge, 1862 19612
- Dryden, James, 1863 2
- Lines, John Donald2