An Historical account of the rise, progress and present state of the canal navigation in Pennsylvania : With an appendix, containing, abstracts of the acts of the Legislature since the year 1790, and their grants of money for improving roads and navigable waters throughout the state; to which is annexed, "an explanatory map." / - Morris, Robert; Smith, William; Howell, Reading; Trenchard, James (Printed by Zachariah Poulson, Junior, number eighty, Chesnut-Street, 1795)