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Topic
- Architecture, American 226
- Architecture--United States 226
Work Type
- covered bridges 226
- bridges (built works) 211
- architecture (object genre) 193
- built works 192
- exterior views 191
- views (visual works) 191
- railroad bridges 173
- viaducts 173
- Howe trusses 15
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Region
- United States 211
- Oregon >> United States 209
- Lane County >> Oregon >> United States 181
- Cottage Grove >> Lane County >> Oregon >> United States 173
- Benton County >> Oregon >> United States 16
- Corvallis >> Benton County >> Oregon >> United States 15
- Irish Bend Covered Bridge >> Benton County >> Oregon >> United States 15
- Grays River >> Wahkiakum County >> Washington >> United States 2
- Jackson County >> Oregon >> United States 2
- Pedee >> Polk County >> Oregon >> United States 2
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