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Topic
- Rivers--Oregon 11
- Roads 8
- Mountains--Oregon 7
- Bays 5
- Bridges 5
- Dams 3
- Dams--Design and construction 3
- Lakes--Oregon 3
- Parks 2
- Boathouses 1
- Boats 1
- Cities and towns 1
- Coasts--Oregon 1
- Dedications 1
- Ferries 1
- Fishing boats 1
- Fishing 1
- Marinas 1
- McKay, Douglas 1
- Ocean 1
