Creator
- Bennion, N. L. (Noel Lindsay), 1903 22
- Oregon State College. Federal Cooperative Extension Service20
- Parker, Jesse Elmer, 1911 3
- Cosby, H. E. (Hubert Elmer), 1887 2
- Fletcher, O. S.2
- Jackman, E. R. (Edwin Russell), 1894 19672
- Oregon State College. Agricultural Experiment Station2
- Arscott, G. H. (George Henry), 1923 1
- Cooney, W. T. (Wilbur Tarleton), 1914 1
- Griebeler, W. L.1
- Harper, J. A.1
- Price, F. E. (Frederick Earl), 1898 1
- Sinnard, H. R. (Herbert Reeves), 1904 1