Poirson, J. B. (mapmaker).
No date. Ca. 1820?
Wall-sized engraved map with outline handcolor, 24 1/4 x 33 3/4 inches (neatline) on sheet 25 1/4 x 34 1/2 inches, outline handcolor. Horizontal and vertical fold, light creasing, 5 inch meandering tear to right end of upper edge, 1 1/2 inch tear to end of left centrefold, 1/2 inch tear to lower left edge (all repaired on verso with acidfree tape); a few tiny edge tears; five spots (noticeable in the west coast of North America and offshore. Map is printed on thick paper and appears to have been independently issued. While the map has condition issues, its size and detail makes for a striking and informative display. A finely engraved and detailed map encompassing the area from the Bering (Bhering) Straits and Russian America (Alaska) and New Zealand to the western edge of Russia and most of western and central Africa, with the Americas at the centre. There is an inset map of Baffin Bay at lower left. The East Coast is outlined in terms of the Colonies with Florida to the south, Maine to the north; the new extent of the United States following the Louisiana Purchase is defined in red (a narrow footprint at the Gulf of Mexico extending north and west to a larger foot print on the Pacific Ocean). Fort Clatsop, the winter 1805-1806 encampment of the Lewis and Clark Expedition, is marked near the mouth of the Columbia River. The border with British America is an erratic configuration running from the Great Lakes westward terminating at Grey's Harbor (at the base of the Olympic Peninsula). The mythical lakes of Timpanagos and Teguayo drain to San Francisco Bay along the S. Filipe river. An impressive map with much fascinating detail. Item #55820