A Burial Cave in Baja California The Palmer Collection, 1887

Prehistoric Structures of Central America: Who Erected Them?

The Ancient Cities of the New World Being Travels and Explorations in Mexico and Central America From 1857-1882

Ancient Civilizations of Mexico and Central America Third and Revised Edition

Mexican Copper Tools: The Use of Copper by the Mexicans Before the Conquest; and the Katunes of Maya History, a Chapter in the Early History of Central America, With Special Reference to the Pio Perez Manuscript.

The Origin of the Mound Builders

The North Americans of Antiquity Their origin, migrations, and type of civilization considered