Navajo Code Talkers - Information on the Navajo soldiers who used their language to create a code for World War II. - http://www.history.navy.mil/faqs/faq61-2.htm
Wikipedia: Navajo Nation - Article on Navajo history. - http://en.wikipedia.org/wiki/Navajo_Nation
Navajo - Summary of the Navajo Indians, their culture and history. - http://www.mnsu.edu/emuseum/cultural/northamerica/navajo.html