What century were the Leiper Canal and Duluth Ship Canal built?
Leiper Canal Early in the 19th century, the Leiper Canal built in 1828-29 during the middle of the American canal age ran about 3 mi along Crum Creek in Delaware County to its mouth in Eastern Pennsylvania's Delaware Valley carrying its owners quarried products to docks on the Delaware River tidewater until 1852.
Downtown Duluth The Downtown of Duluth, Minnesota, United States; is situated between Mesaba Avenue (Highway 194) and 4th Avenue East; and located on Michigan, Superior, First, Second, and Third Streets.