Brehm, Dietrich, Sowers, Thomas, Amherst, Jeffery Amherst, Baron, and Royal United Services Institute for Defence and Security Studies. "PLAN OF LAKE ONTARIO Copied and inlarged from a French Original, the North Shore corrected in some places, likewise the South from Oswego to Niagara by a Sketh of Cap. Sowers." Map. Place of production not identified: D: Brehm Lieut.,, [ca. 1760]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:hx11z090m (accessed April 25, 2024).