[iii]-xviii, [2], 482 pp. Large folding copper-engraved map (22¾x25½" plus margins) of the western and middle portions of North America. (8vo), half calf and boards, gilt-lettered morocco spine label. * Also included is the Charles C. Little & James Brown second edition of the book. Published in 1845, this copy without an engraved map. Together 2 volumes.

Originally published in 1840 as a Senate document, titled: "Memoir, Historical and Political, on the Northwest Coast of North America...," the present edition is much enlarged, with a new map. Wheat describes the map at some length: "Robert Greenhow published in 1844 a large map wholly different from his Burr-drawn map of 1840, drawn this time by George H. Ringgold (not the Cadwalader Ringgold of later California coastal chart fame). Both volumes with the bookplate of John M. McClelland, Jr. Wheat Transmississippi 491.