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Topic
- United States--Appropriations and expenditures 50
- West (U.S.) 49
- River engineering 46
- Transportation 34
- Canals--Design and construction--Costs 32
- Dams--Design and construction 32
- Bodies of water 28
- Beer 27
- Hops 27
- Northwest, Pacific 25
- Rivers 25
- Water resources development 25
- River surveys 24
- Building materials 21
- Shipbuilding 19
- United States Shipping Board Merchant Fleet Corporation 18
- North Portland Harbor (Or.) 15
- Sailing ships 15
- Photography of sailing ships 14
- Shipbuilding industry--Employees 14
