Creator
- Oregon State College. Extension Service109
- Oregon State University. Extension Service27
- Oregon. State Water Resources Board8
- United States. Department Of Agriculture. Economic Research Service7
- United States. Forest Service7
- United States. Soil Conservation Service7
- Usda Field Advisory Committee7
- Usda Oregon River Basin Survey Party7
- Clackamas County (Or.)6
- Jackson County (Or.)6
- Lane County (Or.)6
- Polk County (Or.)6
- Josephine County (Or.)5
- Klamath County (Or.)5
- Washington County (Or.)5
- Yamhill County (Or.)5
- Baker County (Or.)4
- Benton County (Or.)4
- Clatsop County (Or.)4
- Coos County (Or.)4