Mexican Copper Tools: The Use of Copper by the Mexicans before the Conquest (Proceedings of American Antiquarian Society, April 30, 1879)

12 pp. Proceedings of American Antiquarian Society, April 30, 1879. Mexican Copper Tools: The Use of Copper by the Mexicans before the Conquest. "The subject of prehistoric copper mining, together with the trade in the metal and the process of its manufacture into implements and tools by the red men of North America, has engaged the attention of numerous investigators.