In Illinois, the one-hundred-foot Cahokia Mound spreads impressively across sixteen acres, and as many as ten thousand more mounds dot the Ohio River Valley alone. The Mound Builders traces the speculation surrounding these monuments and the scientific excavations which...
Our forebears, finding large, incomprehensible earthworks scattered down the Mississippi Valley, refused to believe they were built by the aborigines who still cluttered up the place and impeded settlement. Mr. Silverberg describes, with gleeful and copious quotation, the nineteenth-century...