Note 533 — Chapter IV · EMIGRATION. GROWTH OF THE RIVER TOWNS.
Reading edition
Niles, Weekly Register, XXVIII., 82.
Birkbeck, M., Notes, 34.
Nuttall, T., Travels, Early W. Travels, XIII., 41. "To judge of the inland commerce carried on betwixt Philadelphia and Pittsburg, a stranger has but to view this road at the present season. All day I have been brushing past wagons heavily loaded with merchandise, each drawn by five and six horses.