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Keywords from Image Description:
Canals USA . Canals in the United States about Johnson Allen Union and Democracy Cambridge Massachusetts Houghton Mifflin Company Allen Johnson PDold Check categories November en Canal en ListofcanalsintheUnitedStates en TechnologicalandindustrialhistoryoftheUnitedStates en Traderoute en HistoryofturnpikesandcanalsintheUnitedStates