Recent archaeological explorations in the valley of the DelawareCharles C. Abbott · First published 1892Open the Tome
Evidences of the antiquity of man in eastern North AmericaCharles C. Abbott · First published 1888Open the Tome
Primitive industry, or, Illustrations of the handiwork in stone, bone and clay of the native races of the Northern Atlantic Seaboard of AmericaCharles C. Abbott · First published 1881Open the Tome
Second report on the paleolithic implements from the glacial drift, in the valley of the Delaware River, near Trenton, N.J.Charles C. Abbott · First published 1878Open the Tome
