- Oregon State University. College Of Forestry88
- United States. Forest Service. Northern Region. State & Private Forestry87
- Pacific Northwest Forest And Range Experiment Station (Portland, Or.)49
- United States. Forest Service. Northern Region37
- United States. Agricultural Research Service34
- Oregon State University. Forest Research Laboratory33
- Oregon State University. Department Of Crop Science32
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club31
- United States. Forest Service30
- Mcgregor, Mark D.25
- James, Robert L.23
- Young, William C.19
- Gibson, Kenneth E.18
- Moravets, F. L.18
- Dooling, Oscar J.17
- Oregon State University. Extension Service17
- Tunnock, Scott15
- Bousfield, Wayne E.14
- Oakes, Robert D.14
- Hamel, Dennis R.12