Codex Tlatelolco is a colonial-eraAztec codex written onamatl, around 1565.[1] It depicts royal ceremonies involving Spanish monarchsCharles V and his son and successorPhilip II. The pictorials show thejura (oath) ceremony of swearing the oath of allegiance to the new Spanish monarch, Philip following the abdication of his father in 1556, performed in the Plaza Mayor ofZócalo in 1557. There are depictions of Charles V and Philip II, as well as the indigenous rulers ofTlatelolco andTenochtitlan, (formeraltepetl that became sectors of the Spanish capital ofMexico City), who along with all officials took the oath of allegiance. There is a written account in Spanish that differs from that depicted in the pictorial. The pictorial account omits the presence of the Spanish cabildo members. The codex refers to the indigenous participation in theMixtón War ca. 1542, a major indigenous rebellion in western Mexico.[2] Its depictions ofNahua dances and nearly full-body feather costumes make it particularly important for understanding indigenous cultural continuities in the early colonial period. The manuscript is held in the National Library of the Mexican Museum of Anthropology and History in Mexico City.[3]