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- Lakes--Oregon 30
- Fishing 13
- Trout 12
- Crater Lake (Or.) 11
- Lakes 10
- Formations (Geology) 9
- Islands--Oregon 8
- Islands 6
- Forest fires--Prevention and control 4
- Landscapes 4
- Automobiles 3
- Chipmunks 3
- Glaciers 3
- Ice on rivers, lakes, etc 3
- Mountains 3
- Tracheophyta 3
- Trails 3
- Wildflowers and Grasses 3
- Aves 2
- Fire extinction 2