Coastal Colonies and the Collapse of Tiwanaku: The Coastal Osmore Valley, Peru. An online version of a paper presented at the Society for American Archaeology 57th Annual Meeting, 1992. members.aol.com/OwenBruce/saa92_1.htm

The Collapse of the Tiwanaku State: A View from the Osmore Drainage: This online academic paper looks at the details of Tiwanaku. www.sscnet.ucla.edu/ioa

The Evolution of Settlement and Agriculture at the Tiwanaku V Site of Chen Chen, Moquegua, Peru: A full text online version of a poster presentation from the 61st Annual Meeting of the Society for American Archaeology, New Orleans 1996. people.bu.edu/prwill/saa96.htm

Tiwanaku: Research resources and information on the Tiwanaku polity in Peru and Bolivia by Alvaro Higueras, Ph.D. The site offers information and links in both Spanish and English as well as Flash presentations about Tiwanaku history and society. www.tiwanakuarcheo.net

The Tiwanaku Occupation of Chen Chen:The PDF report of the findings of 1995 salvage excavations at Chen Chen. andean.kulture.org/bandy/saa_1996.pdf

Were Wari and Tiwanaku in Conflict, Competition, or Complementary Coexistence: Survey Evidence from the Upper Osmore Drainage, Peru: An online version of a paper by Bruce Owen presented at the American Archaeology 59th Annual Meeting,1994. members.aol.com/OwenBruce