Karen O. Bruhns is director of the Cihuat�n/ Las Mar�as Archaeological Project for the Fundaci�n Nacional de Arqueolog�a in El Salvador and an active participant in archaeological projects in the Andes. She has a Ph.D. from UC Berkeley and has taught at several universities. She is author of Ancient South America, co-author of Women in Ancient America, and author of over 60 papers and monographs.
Nancy L. Kelker is professor of art history at Middle Tennessee State University. She has Ph.D. in pre-Columbian art history from University of Texas, Austin. She has served as pre-Columbian art curator at the San Antonio Museum of Art and as a cultural property consultant on antiquities smuggling cases for the United States and Canadian governments. She has prepared exhibition catalogs and written a variety of research articles on pre-Columbian art.