Headlee, S. H., [409].
Heart, Maj. Jona., Ancient Mounds, [398], [410].
Heaviside, J. T. C., Amer. Antiquities, [41].
Hecatæus, [34].
Heckewelder, J., on Delaware names, [437];
on the mounds, [398];
on the Delaware language, [423];
correspondence with Duponceau, [425].
Heer, Flora tert. Helv., [44];
Urwelt der Schweitz, [44].