- Oregon State Agricultural College. Extension Service49
- Oregon State Agricultural College. Agricultural Experiment Station13
- Pacific Northwest Forest Experiment Station (Portland, Or.)11
- Oregon State College. Extension Service10
- Bouquet, A. G. B. (Arthur George Bristow), 1885 7
- Automobile Club Of Oregon5
- Cowgill, Helen Julia5
- Lunn, A. G. (Alfred Gunn), 1883 5
- Oregon State College. Engineering Experiment Station5
- Oregon State College. Federal Cooperative Extension Service5
- Forest Products Laboratory (U.S.)4
- Markwardt, L. J. (Lorraine Joseph), 1889 4
- Mcdaniel, E. B.4
- Mote, Don C. (Don Carlos), 1887 4
- Oregon State College. Agricultural Experiment Station4
- Thompson, B. G. (Benjamin Garrison), 1891 4
- Civilian Conservation Corps (U.S.)3
- Garver, R. D. (Raymond Daniel)3
- Gilmore, W. J.3
- Graf, Samuel Herman, 1887 3