Hernando de Soto encountered the Caddos in the sixteenth century, and survivors of Sieur de La Salle's last voyage in the late seventeenth century gave the first full description of them. By 1903, when George A. Dorsey was investigating their customs and beliefs, the Caddos, numbering 530, were living on a reservation in Oklahoma. The Caddoan tribes, found along the Red River and its tributaries in present-day Louisiana and Arkansas, practiced agriculture...