- Oregon State University. Forest Research Laboratory58
- Forest Products Laboratory (U.S.)41
- United States. Forest Service. Northern Region. State & Private Forestry32
- United States. Forest Service. Northern Region23
- Tunnock, Scott15
- Oregon State University. Extension Service13
- James, Robert L.12
- U.S. International Biological Program. Coniferous Forest Biome12
- Dooling, Oscar J.10
- University Of Washington10
- Berg, Alan B.9
- Hann, David W.8
- Lavender, Denis P.8
- Mcgregor, Mark D.8
- United States. Forest Health Protection7
- Western Dry Kiln Clubs7
- Dewey, Jerald E.6
- Hermann, Richard K.6
- Livingston, R. Ladd6
- Bousfield, Wayne E.5