This is the first book to view the Southwest under Mexico from both sides of the Rio Grande. It covers a period that has long been neglected by historians and it is written for both scholars and laypersons. The study of this period is essential to understand the Western Movement of the United States and Professor Weber has produced a masterful work of the era with a broad array of sources. Winner of six major awards. Albuquerque, 2006 University of New Mexico Press, 8th Pr., 416 Pgs., 6 x 9, HB.