The devotion to Our Lady of Guadalupe is one of the most important elements in the development of a specifically Mexican tradition of religion and nationality over the centuries. The picture of the Virgen morena (Dark Virgin) is to be found everywhere throughout Mexico, and her iconography is varied almost beyond telling. Though innumerable books, both historical and devotional, have been published on the Guadalupan legend in this century alone, it is only recently that its textual sources have been closely studied. This volume makes available to the English-reading public an easily accessible translation from the original Nahuatl of the story itself and the entire book in which the story is embedded. The study also provides scholars with new perspectives on a text long at the center of Mexican intellectual currents. Through the use of technical philological methods, it indicates that the text may have been authored in the mid-seventeenth century by a Spanish-Mexican priest, based on an earlier text by a colleague of his, and that it was not the product of Nahuatl oral tradition.