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- Wildfires 28
- Forests and forestry 18
- Tillamook Burn, Or., 1933 16
- Cutover lands 12
- Cattle 3
- Graminaceae 3
- Sheep 2
- Governors 1
- Graders (Earthmoving machinery) 1
- Plants 1
- Roads 1
- Smoke 1
- Sprague, Charles A. (Charles Arthur), 1887-1969 1
- Wheat 1