The origin of the Cahokia mounds Crook, A. R. (Alja Robinson), 1864- creator text book Springfield [Schnepp & Barnes, printers] 1922 1922
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ENG Antiquities Cahokia (Ill.) Illinois Mounds QH1 .I28 1922 Bulletin of the Illinois State Museum, May, 1922 Bulletin of the Illinois state museum...May, 1922 https://www.biodiversitylibrary.org/bibliography/16722 3190334 22027216 10.5962/bhl.title.16722 DLC