This map by Thomson is devoted to the present day south west of the United States and Mexico. At the time of publication it was dominantly Spanish territory. It is drawn to a good scale and is notable for its delineation of the river system, particularly in the northern regions and the Platte River. The ‘Highest Peak’ denotes the site of Pikes Peak. Texas as we know it is depicted in some detail including a city called Texas at the rough position of Austin. The map is drawn from the important works of Humboldt and Pike. The map is finished with numerous references to native Indian tribes and villages. It was published in Thomson’s ‘New General Atlas’. Phillips (1909-) 731; Wheat (1957) no. 320.