THORNTON, John. A Chart of ye north part of America for Hudson's Bay commonly called ye North West Passage, London: [circa 1785], engraved chart of the North-Eastern seaboard of America from Long Island to the Davis Straight, on thick grey paper, title within decorative cartouche, scale bars, compass rose, rhumb lines, 530 x 430mm. [Cf. NMM III 449 (42)]