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- Oregon State Planning Board 3
- Advisory Committee on Rural Land Zoning 1
- Agriculture 1
- Burning of land 1
- Douglas County Planning Commission (Or.) 1
- Fishes--Conservation 1
- Forest fires 1
- Forestry law and legislation 1
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- Lakes--California 1
- Lakes--Oregon 1
- Land use, Rural 1
- Land use, Urban 1
- Land use--Planning 1
- Lumber trade 1
- Oregon. Advisory Research Council 1
- Placer mining 1
- Portland Chamber of Commerce (Or.) 1
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- Rivers--Oregon 1