Creator
- Oregon State University. Extension Service232
- Oregon. State Game Commission147
- Oregon State University124
- Oregon State University. Agricultural Experiment Station102
- Oregon State Agricultural College. Agricultural Experiment Station79
- Forest Products Laboratory (U.S.)73
- Oregon State College. Agricultural Experiment Station73
- Oregon State University. Cooperative Extension Service54
- Oregon. Dept. Of Geology And Mineral Industries38
- Oregon State University. College Of Forestry37
- Et Al.30
- Lane County Historical Society (Or.)29
- Spatafora, Joseph W.29
- United States. Agricultural Research Service27
- Oregon State University. Engineering Experiment Station26
- Columbia Basin Agricultural Research Center25
- Oregon State University. Forest Research Laboratory24
- Pacific Northwest Cooperative Extension23
- Markwardt, L. J. (Lorraine Joseph), 1889 21
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club21