Primary Source
Map
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A new and accurate map of the English empire in North America; Representing their rightful claim as confirmed by charters and the formal surrender of their Indian friends; likewise the encroachments of the French, with the several forts they have unjustly erected therein. Society of Anti-Gallicans. Sold by Wm. Herbert & Robt. Sayer, London, 1755
map retrieved from The Library of Congress, American Memory maps collection:
http://memory.loc.gov/cgi-bin/query/r?ammem/gmd:@field(NUMBER+@band(g3300+ar006200))