from E.G. Squier and E.H. Davis, Ancient Monuments of the Mississippi Valley: Comprising the Results of Extensive Original Surveys and Explorations, Smithsonian Contributions to Knowledge, Vol. I, Washington, 1848
New edition available from Smithsonian Institution Press. Long out of print, this150th anniversary edition includes a lively introduction by David J. Meltzer, editor of The Archaeology of William Henry Holmes (1992), and author of The Search for the First Americans (1996).
This edition has a new index and bibliography, and is illustrated with the original maps, plates, and engravings. Call 1-800-182-4612 or visit at www.si.edu/sipress/ to order.