Subject
- Forests and forestry -- Northwest, Pacific8
- Mineral industries -- Oregon8
- Natural gas -- Prospecting -- Oregon8
- Petroleum -- Prospecting -- Oregon8
- United States. Forest Service. Pacific Northwest Region8
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club8
- Geothermal resources -- Oregon6
- Fishing -- Oregon5
- Geology -- Oregon -- Field work5
- Hunting -- Oregon5
- Wildlife management -- Oregon5
- Agriculture4
- Agriculture -- Oregon4
- Geology, Stratigraphic4
- Geology -- Oregon -- Curry County3
- Metallurgy -- Oregon3
- Coasts -- Oregon -- Curry County2
- Coasts -- Oregon -- Lincoln County2
- Coasts -- Oregon -- Tillamook County2
- Earthquakes -- Oregon -- Portland2