- Crónica X
"Crónica X" is the name given by Mesoamerican researchers to a postulated primary-source early 16th century historical work on the traditional history of the Aztec and other central Mexican peoples, which some researchers theorize formed the basis for several other extant 16th century documents. The chronicle's author is unknown and the work has been lost, if indeed it ever existed, but it is thought to have been used as a source for several other chronicles that contain striking similarities among these the Chronicles of Fray Diego Durán, Juan de Tovar and Jose de Acosta.
The similarities between the materials and scope of documents such as the Durán, Tovar and Acosta codices were first noted by Robert Barlow in 1945, which led him to postulate that they all must have had a particular source in common, which he denoted as Crónica X.
- Barlow, Robert H. (1945). "La Crónica X". Revista Mexicana de Estudios Antropológicos (Mexico D.F: Sociedad Mexicana de Antropología) VII: 65–87. OCLC 2161384. (Spanish)
- Bernal, Ignacio (1994). "Durán's Historia and the Crónica X (appendix)". In Durán, Diego (1994). The History of the Indies of New Spain. Doris Heyden (trans.). Norman: University of Oklahoma Press. ISBN 0-806-12649-3. OCLC 60223424.
- Peperstraete, Sylvie (2007). La "Chronique X": reconstitution et analyse d'une source perdue fondamentale sur la civilisation Aztèque, d'après l'Historia de las Indias de Nueva España de D. Durán (1581) et la Crónica Mexicana de F.A. Tezozomoc (ca. 1598). British Archaeological Reports, International Series n°1630. Oxford: Archaeopress. ISBN 9781407300443. OCLC 144610208. (French)
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