- Oregon State University. Agricultural Experiment Station19
- Oregon State College. Agricultural Experiment Station14
- Oregon State University. Extension Service9
- Potter, E. L. (Ermine Lawrence), 1884 7
- O'connor, Carl W.5
- Lindgren, H. A. (Harry Arthur), 1888 4
- Oliver, A. W. (Alfred Weaver), 1894 4
- Oregon Agricultural College. Experiment Station4
- Oregon State Agricultural College. Agricultural Experiment Station4
- Davis, George B. (George Balfour), 1915 3
- Deloach, D. B. (Daniel Barton), 1904 3
- Crowell, H. H.2
- Frazier, W. A.2
- Groder, R. H.2
- Mack, H. J.2
- Nelson, A. Gene2
- Peters, Charles Wilber, 1908 2
- Reed, Stephen Paul2
- Rodenwold, B. W. (Benjamin William), 1895 2
- Smith, Frederick J. (Frederick John), 1936 2