This is a survey of the major historic trails of New Mexico and other parts of the American Southwest. These trails were used by Indians, prospectors, soldiers, buffalo hunters, immigrants, and cattle and sheep drovers, and, unlike other, more famous Western trails, were used as a network of two-way trade routes instead of one-way avenues for westward migration. Introductory chapters highlight prehistoric Indian trails, Spanish exploration, and Pecos as a microcosm of the old Southwest. Each subsequent chapter covers an individual trail, describing its history and some of the people who used it. A chronology of New Mexico's history and trail system is included, as are maps of the most important trails.