A rare Spanish version of one of the most influential maps in Texas history

Mapa de los Estados Unidos Mejicanos arreglardo a la distribucien que in diversos decretors ha heche del territorio el Congreso General Mejicano.

Rosa, Publisher, at Gran Patio del Palacio Real, Rue Calle de Montpensier No. 5. Paris, 1837.

For three decades following its first publication in 1826, Henry S. Tanner's Map of Mexico was the ultimate source map for Mexico and the emerging territories of the American West. Based on Alexander von Humboldt's 1810 map of the region, Tanner's version was often copied, both in the U.S. and abroad.

In 1822 in Paris, Rosa translated the Humboldt text into Spanish. His later selection of the 1834 Tanner Map of Mexico to use for a revision showed the importance he placed on this map as the ultimate authority of the region. It was one of the only sources of regional data to already include the treasured surveys released in 1830 by American colonialist Stephen F. Austin, and published exclusively by Tanner.

Ironically, Rosa's update, an exact copy of the 1834 Tanner in Spanish, was inaccurate by 1837. Texas still appears as the Mexican province of "Coahuila y Texas, " -- not as a Republic. The location of Austin's first colony is presented, with no reflection of the myriad of changes in the new Republic. The handcolored boundary between Upper and Lower California was also omitted, and replaced with an engraved boundary.