Subject
- Geology -- Idaho -- Owyhee County1
- Geology -- Idaho -- Seven Devils Mountains1
- Geology -- Idaho -- Seven Devils Mountains -- Heavens Gate Quadrangle1
- Geology -- Oregon -- Greenhorn Mountains1
- Geology -- Oregon -- Morrow County1
- Geology -- Oregon -- Snake River Canyon1
- Geology -- Oregon -- Sparta Quadrangle1
- Geology -- Oregon -- Wallowa Mountains1
- Ophiolites -- Oregon -- Canyon Mountain1
- Petrology -- Oregon -- Blue Mountains1
- Petrology -- Oregon -- Canyon Mountain1