D.M. Corwin, Panama, until 1859; Meredith Howland, New York, until 1904
Easby, Elizabeth Kennedy, and John F. Scott. Before Cortez: Sculpture in Middle America. New York: The Metropolitan Museum of Art, 1970.
Jones, Julie, and Heidi King. "Gold of the Americas." The Bulletin of the Metropolitan Museum of Art vol. 59, no. 4 (Spring 2002), Pg. 48.