The Republic of Texas was a sovereign state in North America from 1836 to 1845. It was formed as a break-away republic from Mexico by the Texas Revolution. The nation claimed a large region that included all of the present state of Texas together with part of the former Mexican region of New Mexico (parts of present-day New Mexico, Oklahoma, Kansas, Colorado, and Wyoming). The eastern boundary with the United States was defined by the Adams-Onís Treaty between the United States and Spain, in 1819. Its southern and western-most boundary with Mexico was under dispute throughout the existence of the republic, with Texas claiming that the boundary was the Rio Grande, and Mexico claiming the Nueces River as the boundary.

This great school atlas map with early territorial borders in the West features the Independent Republic of Texas with Austin shown as the capital by a large star. Oregon Territory covers the northwest and extends well into Canada. The huge Indian Territory lies north of Texas and extends to the Mandan District, which in turn goes to the border with Canada. Iowa Territory is in a rare configuration, stretching from Missouri to the Canadian border and bounded east and west by the Mississippi and Missouri rivers. Annotated with the populations for the states and Texas. The large inset at lower left is a detailed "Map of Mexico and Guatimala" and shows the Republic of Texas. Drawn and engraved by Stiles, Sherman & Smith.

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Condition: A

There is one tiny spot in Indian Territory and a short, archivally repaired centerfold separation at bottom.