1. The tourist's pocket map of Pennsylvania : exhibiting its internal improvements, roads, distances &c. Maps University Of Minnesota Public content 1839. Young, J. H. (James Hamilton). Insets: Lehigh and Schuylkill coal regions -- Vicinity of Philadelphia -- Profile of Pennsylvania canal. 33 x 40 centimeters Scale 1:1,400,000 Gene... S. Augustus Mitchell (Philadelphia), 1831.