Steel-engraved map on 4 joined sheets, with contemporary hand-coloring, 1156 x 902 mm. (10 in. horizontal split along upper fold, a few other small splits to folds). Engraved vignette with a shield of the United States, flanked by an eagle, forest, and ships. Inset maps of six cities (Boston, New York, Philadelphia, Baltimore, Charleston, and New Orleans) and the North American continent, as well as population statistics, a list of counties, canal routes, and the relative heights of mountains and relative lengths of rivers in the United States.

THE RARE 1839 EDITION OF THE FIRST SEPARATELY PUBLISHED WALL MAP BY MITCHELL, first published in 1831. This map is distinguished by its fine steel engraving, a technique championed by Mitchell and Young to achieve greater sharpness and durability than the copper plates employed by earlier mapmakers. RARE: According to online records, this edition has never sold at auction. cf. Ristow, p.309 (does not mention this edition).