E. H. Davis, Ancient Monuments of the Mississippi Valley
“ Within these mounds we must look for the only authentic remains of their builders. They are the principal depositories of ancient art; they cover the bones of the distinguished dead of remote ages; and hide from the profane gaze of invading races the altars of the ancient people.A simple heap of earth or stones seems to have been the first monument which suggested itself to man; the pyramid, the arch, and the obelisk are evidences of a more advanced state. ”
