- Oregon Agricultural College. Experiment Station31
- Oregon State College. Extension Service20
- Oregon State Agricultural College. Agricultural Experiment Station16
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- Bullis, D. E. (Deloss Everett), 1894 19843
- Hartman, Henry, 1889 3
- Oregon Agricultural College. Extension Service3
- Oregon. Department Of Forestry3
- Selby, H. E. (Halbert Edgerton), 1896 3
- Show, S. B. (Stuart Bevier), 1886 19633
- Brown, Gordon G. (Gordon George), 1887 2
- Dean, H. K. (Harold Karl), 1889 2
- Dreesen, W. H. (William Henry), 1880 2
- Forest Products Laboratory (U.S.)2
- Fulton, B. B. (Bentley Ball), 1889 2
- Haley, Robert Murkland2
- Harvey, Edward Maris, 18882
- Hyslop, G. R. (George Robert), 1884 2
- Johnston, W. W. (William Waters), 1896 2
- Kotok, E. I.2