Traditions of De-coo-dah : and antiquarian researches : comprising extensive explorations, surveys, and excavations of earthen remains of the mound-builders in America ; the traditions of the last prophet of the Elk nation relative to their origin and use ; and the evidences of an ancient population / by William Pidgeon.
- Pidgeon, William.
The Indian, or mound builder : the Indians, mode of living, manners, customs, dress, ornaments, etc., before the white man came to the country, together with a list of relics gathered by the author ; geology, ethnology and archæology of this country and the Pacific tribes treated to a limited extent / Thomas Beckwith.
- Beckwith, Thomas, 1840-1913.
Observations on the aboriginal monuments of the Mississippi Valley. The character of the ancient earth-works, and the structure, contents, and purposes of the mounds; with notices of the minor remains of ancient art / With illustrations. From the second volume of the Transactions of the American ethnological society.
- Squier, E. G. 1821-1888.