Foot-Prints of Vanished Races in the Mississippi Valley : Being an Account of Some of the Monuments and Relics of Pre-Historic Races Scattered Over Its Surface, With Suggestions as to Their Origin and Uses

Foot-Prints of Vanished Races in the Mississippi Valley : Being an Account of Some of the Monuments and Relics of Pre-Historic Races Scattered Over Its Surface, With Suggestions as to Their Origin and Uses