Union Canal of Pennsylvania. Proposed by William Penn in 1690 to tap the agricultural wealth of the Commonwealth and give access to a second settlement on the Susquehanna River. The Canal was the first ever surveyed in the United States. This was done in 1762 and 1770.  These photos are of the section that remains in Lebanon, PA.  See also: https://en.wikipedia.org/wiki/Union_Canal_(Pennsylvania)