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- Roads 964
- Rivers 142
- Bridges 116
- Automobiles 108
- Trees 101
- Forests and forestry 98
- Buildings 92
- Mountains 73
- Columbia River Highway (Or.) 63
- Cliffs 51
- Forest roads 48
- Landscapes 46
- Tunnels 41
- Dirt roads 36
- Cities and towns 32
- Aerial photography 29
- Rivers--Oregon 25
- Dwellings 24
- Mountains--Oregon 23
- Columbia River Gorge (Or. and Wash.) 22
