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- Multnomah Falls (Or.) 15
- Waterfalls 15
- Bridges 11
- Trees 8
- Rocks 5
- Nature 4
- Rivers 4
- Tourists 4
- Waterfalls--Oregon 4
- Columbia River Highway (Or.) 3
- Automobiles 2
- Columbia River Valley 2
- Columbia River 2
- Landscapes 2
- Railroad trains 2
- Roads 2
- Columbia River Gorge (Or. and Wash.) 1
- Forests and forestry 1
- Ice 1
- Monuments 1