Jefferys, Thomas, -1771, Cook, James, Desjardins, pilot of Québec, Saunders, Charles, Sir, and Robert Sayer and John Bennett (Firm). "The Shoals of Beauport; The River St. Lawrence from the Basin of Quebec to the Falls of Richeu." Map. London: Printed for Robt. Sayer & Jno. Bennett, no. 53 Fleet Street, February 16, 1775. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth-oai:4168cg28d (accessed June 13, 2024).