- Oregon State Agricultural College. Agricultural Experiment Station113
- Forest Products Laboratory (U.S.)105
- Oregon State College. Agricultural Experiment Station87
- Oregon State Agricultural College. Extension Service43
- Oregon State College. Federal Cooperative Extension Service34
- Pacific Northwest Forest Experiment Station (Portland, Or.)27
- Oregon State College. Extension Service24
- Powers, W. L. (Wilbur Louis), 188716
- Mote, Don C. (Don Carlos), 1887 13
- Bouquet, A. G. B. (Arthur George Bristow), 1885 12
- Selby, H. E. (Halbert Edgerton), 1896 11
- Stamm, Alfred J. (Alfred Joaquim), 1897 11
- Burrier, A. S. (Arnold Stewart), 1902 193810
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)10
- Price, F. E. (Frederick Earl), 1898 10
- Brandt, P. M. (Philip Martin), 1888 9
- Browne, F. L. (Frederick Lincoln), 1895 9
- Cowgill, Helen Julia9
- Schuster, C. E. (Carl Ephraim), 1889 9
- Wiegand, Ernest Herman, 1886 9