Note 534 — Chapter IV · EMIGRATION. GROWTH OF THE RIVER TOWNS.
Reading edition
Welby, A., Visit, Early W. Travels, XII., 197.
Niles, Weekly Register, XV., 267. "It has been estimated that three millions of dollars worth of goods were at Pittsburg on the 7th ult. (December, 1818) waiting for a rise of the waters, to descend the river, as well as a multitude of travelers and emigrants."