In November 1519, Hernando Cortés walked along a causeway leading to the capital of the Aztec kingdom and came face to face with Moctezuma. That story--and the story of what happened afterwards--has been told many times, but always following the narrative offered by the Spaniards. After all, we have been taught, it was the Europeans who held the pens. But the Native Americans were intrigued by the Roman alphabet and, unbeknownst to the newcomers, they used it to write detailed histories in their own language of Nahuatl. Until recently, these sources remained obscure, only partially translated, and rarely consulted by scholars.