Pennsylvania Society for the Promotion of Internal Improvements to the Commonwealth.
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This work by a society of Pennsylvania civic and business leaders is a study of railways and how they might be constructed in Pennsylvania. The society was formed after the completion of the Erie Canal in 1819 and the ensuing fear that traffic to and from the interior would concentrate in New York. While canals were proven technology, some people saw railroads as a way to overtake canals and capture that commercial traffic.