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Search Issues: Update 2026-09-16 - Repairs to some of our search pages are ongoing. Thank you for your continued patience!
Meanwhile, elements of the Advanced Search are working and the Alphabetical Listings are working, too.
a place name, a municipality (also called Chalco Atenco in pre-Hispanic times); known today as Chalco de Díaz Covarrubias; and a large region in the southeast of the Valley of Mexico
See an image that represents Chalco in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
Axcan domingo ynic cemilhuitl mani metztli de febrero de 1615. años. yhcuac cenca chicahuac ocehuetzico yn ayc yuh mochihuani nican Mexico. oc cenca ompa yn izquican chalco. mochi cecualloc. y nochiznopalli yn oquitocaca ytencopa Jues español topille yn quimocuitlahuiaya. ye otlatzicoca ye omozcaltiaya huel tlaltitech oquihuicac ynic oquipollo cetl huel ce semana yn chicahuac ocehuetz = Today, Sunday the first day of the month of February of the year 1615, was when there was a very severe freeze such as had never happened here in Mexico. Especially all over Chalco all the cochineal cactus froze that had been planted at the order of a Spanish judge, [a constable]. The [cactus] that they were cultivating had already taken root and started to grow, but the ice destroyed it and knocked it all the way down to the ground. For a whole week it froze severely (central Mexico, 1614–1615)