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Subject
- Congressional hearings9
- Congressional witnesses9
- Congressional investigations6
- Canals4
- Construction4
- Dams4
- Federal aid to transportation4
- Interoceanic canals4
- Nicaragua Maritime Canal Company4
- Clayton-Bulwer Treaty3
- Competitive bidding3
- Concessions3
- Corporate finance3
- Cost3
- International relations3
- Locks (Hydraulic engineering)3
- Navigation improvements3
- Nicaragua Canal Construction Company3
- Treaties3
- United States. War Dept. Engineer Dept3