Antique maps engraved by J. & C. Walker, published under the superintendance of the Society for the Diffusion of Useful Knowledge (London: Chapman and Hall, 1844) Originally printed on two separate large overlapping sheets which have been joined to form a single map, as intended by the publishers. The borders on the map have been drawn to show Texas as being part of Mexico, reflecting the era of Texan history between 1821 and 1836, when it was part of Mexico. The northern border of the United States and Canada shows the disputed border for Oregon Territory which was finally solved in 1846 with the border at the 49th parallel. The Arctic region shows the extent of contemporary knowledge, noting nothing besides Packed Ice north of the Bering Strait. Africa is shown with much of its interior left unmapped. Surrounded with a keyboard style border. Top margin trimmed thus affecting title.