Stobo, Robert, Sayer, Robert, and -1771 Thomas Jefferys. "Plan of Fort le Quesne, built by the French at the fork of the Ohio and Monongahela in 1754." Map. London: Printed for Robt. Sayer in Fleet Street and Thos. Jefferys at the corner of St. Martins Lane in the Strand, [1768]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:q524mv356 (accessed May 03, 2024).