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Topic
- Mountains--Washington (State) 8
- Mountains--Oregon 3
- Universities and colleges--Research 1
Region
- Mount Saint Helens >> Skamania County >> Washington >> United States 8
- Mount Adams >> Yakima County >> Washington >> United States 3
- Mount Hood >> Hood River County >> Oregon >> United States 3
- Mount Jefferson >> Linn County >> Oregon >> United States 1
- Mount Rainier >> Pierce County >> Washington >> United States 1
- Mount Washington >> Mason County >> Washington >> United States 1
- Three Fingered Jack >> Jefferson County >> Oregon >> United States 1
- Three Sisters >> Deschutes County >> Oregon >> United States 1