Jefferys, Thomas. "North America from the French of Mr. D'Anville, improved with the back settlements of Virginia and course of Ohio, illustrated with geographical and historical remarks." Map. London: Thos. Jefferys, 1755. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:6t053n91f (accessed April 19, 2024).