The mule barge has not operated since 2004, due to flood damage to the Delaware Canal. The phone number listed has not been used for the barge operation since 1996, when the concession was transferred to another company - it's been passed to a third company since. (I'm a former barge company employee 1989-97)
You can take a ride on a mule barge, sailing past eighteenth-century homes, gardens, and workshops. Many barges are equipped with folk singers or historians. The Delaware Canal became operational in 1840, and, at its height, mules hauled thousands of barges carrying loads of coal and limestone. The canal includes 25 lift locks, 9 aqueducts, and 106 bridges.