Mound-Builders

Mound State Monument, Moundville, Alabama

The Problem of the Ohio Mounds

Grave-mounds and Their Contents

A Manual of Archæology, as Exemplified in the Burials of the Celtic, the Romano-British, and the Anglo-Saxon Periods

Ocmulgee National Monument, Georgia

Animal Carvings from Mounds of the Mississippi Valley

Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 117-166

Burial Mounds of the Northern Sections of the United States

Ancient Monuments of the Mississippi Valley

Smithsonian Contributions to Knowledge, Vol. I.