Emory Adams Allen, The Prehistoric World; Or, Vanished Races
“ In Europe there was apparently a long lapse of time between the disappearance of the Paleolithic tribes and the arrival of the Neolithic people, but we have no evidence of such a period in America. The Paleolithic people remained in possession until driven away by the Neolithic ones. All evidence of Paleolithic man in Europe terminated with the Glacial Age, and there is little doubt but what they date from preglacial times. Our present knowledge does not carry us any farther back in this country than the close of Glacial times. ”
