Letter from Betty Williams to Carolyn Sherif, March 17, 1970
in Muzafer and Carolyn Wood Sherif Papers, of University of Akron. Cummings Center for the History of Psychology (1970), Series 5: Research Studies, 1949-1967, Sub-series 2: Robber's Cave Study, 1953-1954, Box M3552, Folder 7 , 1 page(s)