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- Multnomah Falls (Or.) 22
- Waterfalls 15
- Bridges 11
- Waterfalls--Oregon 7
- Trees 6
- Tourists 5
- Nature 4
- Rivers 4
- Automobiles 3
- Railroad trains 3
- Rocks 3
- Columbia River Valley 2
- Park lodging facilities 2
- Columbia River Gorge National Scenic Area (Or. and Wash.) 1
- Columbia River Highway (Or.) 1
- Columbia River 1
- Landscapes 1
- Parks--Public use 1
- Passenger trains 1
- Persons 1