Latin American Prehistory
This site from Minnesota State University offers extensive information on prehistoric peoples and cultures of Latin America, including the Aztec, Maya, Toltecs, Incas, Tiwanaku, Wari, and Olmec. You can also find information on hunter-gatherers, archaeology, and technology and society.
http://www.mnsu.edu/emuseum/prehistory/latinamerica/

Civilizations in America
This clickable timeline links to informative, illustrated essays about the Maya, the Aztecs, and the Incas.
http://www.wsu.edu/~dee/CIVAMRCA/TIMELINE.HTM

Mystery of the Maya
This interesting Web site about Maya history and culture is part of the extensive online site created by the Canadian Museum of Civilization, in Hull, Quebec, Canada. Once you've finished looking through the Maya information, take some time to explore this site further.<
http://www.civilization.ca/civil/maya/mminteng.html