An Organization for Canal Advocates and Researchers
1840 Map Showing Canals and Railroads of Midwest
Sheaff, J. A. Map of the projected railway from Harrisburg to Pittsburgh with proposed extensions to Cleveland, Cincinnati and St. Louis, in connection with the public works of Pennsylvania, Ohio, Indiana and Illinois. [Philadelphia, ?, 1840] Map. https://www.loc.gov/item/98688348/.