Sharon L. Snyder and David T. Mitchell are faculty in the Department of Disability and Human Development at the University of Illinois at Chicago. They are the authors of "Narrative Prosthesis: Disability and the Dependencies of Discourse," and editors of "The Body and Physical Difference: Discourses of Disability"; "Eugenics in America, 18481945: A History of Disability in Primary Sources"; and "The Encyclopedia of Disability,"" """""