This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
The Codex Mendoza was made to travel. Commissioned by Spain's first viceroy of New Spain around 1541, it was meant to cross the Atlantic and inform the Spanish crown about the empire it had just conquered, presenting Aztec history, tribute obligations and daily life through the hands of indigenous painters who had trained in a pictographic tradition that predated the conquest by centuries, working now under colonial patronage rather than for an Aztec ruler.
It never arrived. French privateers captured the ship carrying it, and the manuscript that was supposed to inform a Spanish king instead entered a chain of French and English private ownership entirely outside Spain's reach, eventually settling in Oxford's Bodleian Library, where it remains today, an irony that follows the codex's own contents: a document created specifically to serve one empire's administrative curiosity about a conquered people ended up in the hands of that empire's rivals instead.
What survived the accident is genuinely valuable precisely because of how it was made. The tribute section, listing exactly what goods each province owed the Aztec state, gives historians a concreteness about the empire's actual economic structure that narrative chronicles rarely provide, while the closing ethnographic section, walking through an ordinary Mexica life from birth to old age, offers one of the fullest pictorial records of daily social life anywhere in the pre-conquest Mesoamerican corpus, filtered, as every such document is, through the colonial commission that called it into being.