(Southwest) Colton's Territories of New Mexico and Utah, Colton, 1860 Colton's famous map of the Southwest when divisions of the large territories begin. Here New Mexico is now diminished by a Arizona territory running east- west from its southern border to 33.5 latitude. Likewise in western Utah is a hand colored division for what would later become Nevada. But most significantly, this map notes a proposed "Colona" east of the continental divide and covering what was western Kanzas and Nebraska, it is a proto Colorado territory. It is a rare notation for a map to include the "Colona" territory as it only lasts for a year. The entire region is crossed by trails and proposed railroad routes and numerous towns have appeared, including the new "Denver City". A desirable map for the developing West. Wheat 832. Condition is fair with light dampstaining, overall paper toning and some sporadic foxing.