- Oregon Agricultural College. Experiment Station51
- Lewis, C. I. (Claude Isaac), 1880 192410
- Oregon Agricultural College. Extension Service9
- Dryden, James, 1863 6
- Kraus, E. J. (Ezra Jacob), 1885 6
- Oregon Agricultural College6
- Allen, R. W. (Ralph Wilmer), 1885 5
- Powers, W. L. (Wilbur Louis), 18875
- Gardner, Victor Ray, 1885 4
- Oregon Agricultural College. Extension Division4
- Potter, E. L. (Ermine Lawrence), 1884 4
- Scudder, H. D. (Henry Desborough), 1881 4
- Bouquet, A. G. B. (Arthur George Bristow), 1885 3
- Brown, F. R. (Frank Ross)3
- Childs, Leroy, 1888 3
- Magness, J. R. (John Robert), 1894 3
- Bradley, C. E. (Charles Edward), 1874 2
- Brooks, Helen Bryce2
- Brown, Gordon G. (Gordon George), 1887 2
- Cate, C. C. (Claude Clifton), 1882 2