Monongahela Navigation Company
In 1817, the Monongahela Navigation Company was incorporated by the Commonwealth of Pennsylvania to "make a lock navigation on the river Monongahela." After overcoming numerous financial and engineering difficulties, the company succeeded in building four locks and dams by 1844, opening the Monongahela from Pittsburgh to Brownsville for slackwater navigation.
From the description of Copybook of records of Monongahela Navigation Company, 1840-1897. (University of Pittsburgh). WorldCat record id: 302423571
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