"The Huexotzinco Codex was written on amatl paper in 1531 by Nahua Aztec people from just south of Mexico City.
The 8 page manuscript formed part of a submission in a legal suit against representatives of the Spanish colonial government. They had been forcing the Nahua people to make onerous payments of goods and services while Hernando Cortés (who had rights over the Huexotzinco estates) was out of the country.
Cortés joined the Nahua people in challenging the abuses of the administrators when he returned to Mexico. They were successful in their legal case both in Mexico and later in Spain where the King ordered that the majority of the taxed material be returned."
BibliOdyssey: Huexotzinco Codex