Gordon, Harry. Extracts from the Journal of Captain Harry Gordon, chief engineer in the Western department in North America, who was sent from Fort Pitt, on the River Ohio, down the said river, etc., to Illinois, in 1766.
Published in Pownall's "Topographical Description of North America," Appendix, p. 2.
Washington, George. Journal of a tour to the Ohio River. [Writings, ed. by Ford, vol. II. New York, 1889.]
The trip lasted from October 5 to December 1, 1770. The party went in boats from Fort Pitt, as far down as the mouth of the Great Kanawha. This journal is the best on the subject, written in the eighteenth century.
Pownall, T. A topographical description of such parts of North America as are contained in the [annexed] map of the Middle British Colonies, etc. London, 1776.
Contains "Extracts from Capt. Harry Gordon's Journal," "Extracts from Mr. Lewis Evans' Journal" of 1743, and "Christopher Gist's Journal" of 1750-51.
Hutchins, Thomas. Topographical description of Virginia, Pennsylvania, Maryland, and North Carolina, comprehending the Rivers Ohio, Kenhawa, Sioto, Cherokee, Wabash, Illinois, Mississippi, etc. London, 1778.
St. John, M. Lettres d'un cultivateur Americain. Paris, 1787, 3 vols.
Vol. 3 contains an account of the author's boat trip down the river, in 1784.
De Vigni, Antoine F. S. Relation of his voyage down the Ohio River from Pittsburg to the Falls, in 1788.