The extant manuscript of the Exercicio, currently in the Newberry Library, Chicago, Illinois, is not the original but a copy made by the 17th century Nahua scribe Chimalpahin, who may have altered the text somewhat.
The current manuscript of the Exercicio, located in the Newberry Library, Chicago, is not the original but a reproduction made by the 17th-century Nahua scribe Chimalpahin, who may have altered the text to some degree.