BRASSIER, William Furness (fl. 1745-1772). A Survey of Lake Champlain including Lake George, Crown Point, and St. John. Surveyed by Order of His Excellency Major-General Sr. Jeffery Amherst, Knight of the most Honble. Order of the Bath. Commander in Chief of his Majesty's Forces in North America (now Lord Amherst) by William Brassier, Draughtsman. London: Sayer & Bennett, August 5, 1776.
Engraved map, 690 x 507 mm, with large inset "A Particular Plan of Lake George Surveyed in 1757," sparing contemporary handcoloring. (One small marginal tear neatly mended, a few fold lines carefully repaired from verso).
MAPPING THE KEY TO A CONTINENT. A seminal cartographic achievement, depicting with remarkable detail a vast swathe of mostly wilderness territory extending north from Skenesboro (Whitehall) and Fort William Henry (on Lake George), past Ticonderoga and Crown Point to L'Isle aux Noix and St. John (St. Jean) in Quebec. In this second state, Brassier had added considerable information on recent military actions. Near Crown Point, he carefully tallies the vessels and armament of the British flotilla under Carleton, in their critical battle at Valcour Island against Benedict Arnold's meager naval force. He indicates the spot where "The Congress Galley, General Arnold and five gondolas, ran on shore" on 13 October 1776. Far to the North is marked the spot where "Major [Robert] Rogers had an engagement in 1760, with a large body of French and Indians." The inset map of Lake George includes marine soundings and indicates "Where Sir William Johnson defeated Genl. Dieskau Septr. 8ssh, 1775."
Guthorn, British Maps of the American Revolution, 12/3&4; Nebenzahl, Atlas of the American Revolution, pp. 61-63; Schwartz & Ehrenberg, Mapping of America, p.190; Seller & Van Ee, Maps & Charts of North America & West Indies, 1071 & 1073.