The Politics of Race and Representation: Melville J. Herskovits and the Issue of Blackness Herskovits at the Heart of Blackness. Film. Produced and directed by Llewellyn Smith; Executive Producer, Christine Herbes-Sommers; Producer and Director of Research, Vincent Brown. Distributed by California Newsreel, San Francisco, CA. 2009.
Communicative Technologies in the Ancient Andes: Decoding the Inka Khipu Signs of the Inka Khipu: Binary Coding in the Andean KnottedString Records. By Gary Urton. Austin: University of Texas Press, 2003.
