Essays of an Americanist I. Ethnologic and Archæologic. II. Mythology and Folk Lore. III. Graphic Systems and Literature. IV. Linguistic.

The Prehistoric World; Or, Vanished Races

Incentives to the Study of the Ancient Period of American History An address, delivered before the New York Historical Society, at its forty-second anniversary, 17th November 1846

Some Observations on the Ethnography and Archaeology of the American Aborigines

The Ancient Monuments of North and South America, 2nd ed.

The American Nations, Vol. I. Or, Outlines of a National History of the Ancient and Modern Nations of North and South America

The History of Ancient America, Anterior to the Time of Columbus Proving the Identity of the Aborigines with the Tyrians and Israelites; and the Introduction of Christianity into the Western Hemisphere By The Apostle St. Thomas

Los Indios, su Historia y su Civilización

The lost Atlantis, and other ethnographic studies

La cruz en América (Arqueología Argentina)

Compendio de la historia general de América. Tomo I