- Oregon. Dept. Of Geology And Mineral Industries55
- Oregon State University. Extension Service14
- Hatfield Marine Science Center11
- Lund, Ernest H.9
- Webster, Janet G.9
- Newton, Vernon C.8
- Ruttle, Marilyn8
- United States. Forest Service8
- Gilmont, Susan7
- Institute For Natural Resources7
- Markland, Mary7
- Mason, Ralph S.7
- United States. Soil Conservation Service7
- Bowen, Richard G.6
- Brophy, Laura S.6
- Oregon. State Water Resources Board6
- Usda Field Advisory Committee6
- Usda Oregon River Basin Survey Party6
- Oregon. Department Of Fish And Wildlife5
- Ramp, Len5