MEXICO CITY.- The creation of the Mexican Digital Library represents the only option to recover at least 20 Prehispanic Codex that survived the Conquest, to present guarded in libraries around the world<; “the day we gather most of these ancient documents digitally we will have a great virtual Amoxcalli that will let us understand better Mesoamerican world”. Doctor in history and anthropologist Miguel de Leon Portilla declared this at the inauguration of the Congress on Digitalization of Mexican Codex, to representatives of diverse world libraries. The academic activity that ends in May 21st 2010 was organized by the National Council for Culture and Arts (CONACULTA), the National Institute of Anthropology and History (INAH) and the Center of Studies on Mexican History. He recalled Mexica culture had spaces destined to safeguard documents called amoxcalli (in Nahuatl, house of books), remarking that Mesoamerica was the