 The influence of Doris Heyden in the field of pre-Columbian studies is evident from the two co-ordinated volumes of essays that have been dedicated to her.The first, in Spanish, is "Chalchihuite" edited by María de Jesús Rodríguez-Shadow and Beatriz Barba Ahuatzin de Piña Chan (1999).The second, in English, is the similarly titled "In Chalchihuitl in quetzalli/Precious Greenstone Precious Quetzal Feather" edited by Eloise Quiñones Keber (2000).