The Safford and Aravaipa valleys of Arizona have always lingered in the wings of Southwestern archaeology, away from the spotlight held by the more thoroughly studied Tucson and Phoenix Basins, the Mogollon Rim area, and the Colorado Plateau. Yet these two valleys hold intriguing clues to understanding the social processes, particularly migration and the interaction it engenders, that led to the coalescence of ancient populations throughout the Greater Southwest in the fourteenth and fifteenth centuries A.D. Because the Safford and Aravaipa valleys show cultural influences from diverse areas...