English: This document was created to record the 11th-century military and political feats of the Mixtec Lord Eight-Deer (also known as Tiger Claw) as well as those of another ruler, Four-Wind, along with the religious ceremonies marking these feats. The codex, thought to have been created in the 12th century, was acquired by the National Museum around 1891 and was reproduced in 1892. The life of Eight-Deer, depicted in all pre-Hispanic Mixtec codices known to exist, included his conquests of two important Mixtec domains: Tilantongo and Tututepec. Through this and other conquests and the marital alliances he promoted, Eight-Deer achieved political unification among the numerous Mixtec domains of the Post-Classical period. The eminent Mexican archaeologist and historian Alfonso Caso (1896-1970), a pioneer in the study of pre-Hispanic cultures in the area of Oaxaca, demonstrated that this codex and the Becker I Codex (in the Museum für Völkerkunde in Vienna, Austria) are fragments of a single codex. Caso's assemblage can be seen in Miguel León-Portilla's 1996 edition of the codices, in which the fragments were reunited for the first time and named, in honor of the grand master, the Alfonso Caso Codex.