by His Excellency's most obedient humble servant, Guy Johnson, 1771. 1 map ; 20 x 31 cm Scale [ca. 1:2,000,000] (W 80°--W 73°/N 44°--N 41°). Relief shown by hachures. "Copied from the original manuscript map in State Library." From: O'Callaghan, E.B. The documentary history of the state of New York. 1851, v. 4, p. 661. Facsim. of map drawn: 1771.