Mitchell, S. Augustus. A New Map of Texas Oregon and California. Philadelphia, 1846.

S. Augustus A New Map of Texas Oregon and CaliforniaPhiladelphia, 184622 x 21 ½ inches   Nice example of Mitchell's seminal map of Texas, Oregon, Upper California, Missouri Territory and a massive Indian Territory (covering most of Kansas and Colorado). The region covered by the map was of particular interest in 1846 because of two recent and related events. In 1845, Texas was admitted into the Union, which prompted Mexico to invade Texas in 1846, thus precipitating the U.S.-Mexican war. General curiosity about the new State of Texas and interest in the war with Mexico led to Mitchell's timely map becoming quite popular. Mitchell used the latest and best sources for the map, including Arrowsmith's 1841 map of Texas, Fremont's and Emory's maps of their explorations in the region, data from the Lewis & Clark expedition, Nicollet's map of the region between the Mississippi River and the Missouri River, and Wilkes map of Oregon. Among other significant uses of the map, Brigham Young or