https://ia802606.us.archive.org/20/items/traditionsofdeco00inpidg/traditionsofdeco00inpidg.pdf
Traditions of De-Coo-Dah, and antiquarian researches : comprising extensive explorations, surveys, and excavations of the wonderful and mysterious earthen remains of the mound-builders in America; and the traditions of the last prophet of the Elk Nation relative to their origin and use; and the evidences of an ancient population more numerous than the present aborigines