Michael D. Mathiowetz is a lecturer at University of California, Riverside. His research is focused on the archaeology, ethnohistory, and ethnology of Indigenous societies in the southwestern United States and northwestern Mexico, including the art, religion/ritual, and nature of pre-Hispanic interregional interaction.

Andrew D. Turner is a senior research specialist at the Getty Research Institute. His research focuses primarily on art, identity, and cross-cultural interaction in ancient Central Mexico.