Comparison of North and South American Mounds.
pictures (two-dimensional representations)
Northern Illinois University
Schoolcraft, Henry Rowe. Information Respecting the History, Condition and Prospects of the Indian Tribes of the United States, Volume 5. Philadelphia: Lippincott, Grambo, and Company, 1853.
LincolnPrairieNative American RelationsReligion and CultureLand, Migration and Settlement1818--18601673--1818