Hämäläinen, Pekka (Winter 1998). "The Western Comanche Trade Center: Rethinking the Plains Indian Trade System". Western Historical Quarterly. 29 (4): 485–513. doi:10.2307/970405. JSTOR970405.
Ewers, John C. (May 1973). "The Influence of Epidemics on the Indian Populations and Cultures of Texas". Plains Anthropologist. 18 (60): 108–109. JSTOR23667140.
Hämäläinen, Pekka (Winter 1998). "The Western Comanche Trade Center: Rethinking the Plains Indian Trade System". Western Historical Quarterly. 29 (4): 485–513. doi:10.2307/970405. JSTOR970405.