 From 2002 to 2007 research on this manuscript was conducted at Harvard University.The work was carried through the Moses Mesoamerican Archive in the Department of Anthropology and the David Rockefeller Center for Latin American Studies at Harvard University.The Mexican American historian of religions David Carrasco was responsible for organizing the five-year study at Harvard that resulted in Cave, City, and Eagle's Nest, edited by Carrasco and his former student and colleague Scott Sessions.