Creator
- Oregon State College. Extension Service86
- Oregon State University. Extension Service28
- Clackamas County (Or.)5
- Jackson County (Or.)5
- Benton County (Or.)4
- Clatsop County (Or.)4
- Curry County (Or.)4
- Gilliam County (Or.)4
- Harney County (Or.)4
- Josephine County (Or.)4
- Klamath County (Or.)4
- Lake County (Or.)4
- Lane County (Or.)4
- Linn County (Or.)4
- Polk County (Or.)4
- Sherman County (Or.)4
- Tillamook County (Or.)4
- Washington County (Or.)4
- Baker County (Or.)3
- Columbia County (Or.)3