Contributions by: Carrie J. Brezine, Reymundo Chapa, Oswaldo Chinchilla Mazariegos, Michael D. Coe, Tom Cummins, Víctor Falcón Huayta, Stephen D. Houston, Margaret A. Jackson, Federico Navarrete, Michel R. Oudijk, Frank Salomon, Karl Andreas Taube, Javier Urcid, R. Tom Zuidema