Seymour is without peer in her ability to weave archaeological, cartographic, documentary, and ethnographic evidence into this story. This is an important work of scholarship that will be appreciated and debated, and thereby elevate our understanding of the Southwest Borderlands of Arizona and Sonora. Her detailed and precise supporting evidence, whether cartographic or archaeological, will make this book the latest word, if probably not the final word, in our discussions of the region in the late eighteenth century." —James F. Brooks, professor of history and anthropology, University of California, Santa Barbara