Amherst, Jeffery Amherst, Baron, and Royal United Services Institute for Defence and Security Studies. "Carte du Lac Champlain depuis le Fort de Chambly Jusques au desus du Fort S.t Frederic, dans la Nouvelle France." Map. Place of production not identified: Producer not identified, [1739–1759]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:hx11z180k (accessed April 18, 2024).