After we can deduce certain minimum features from them
in Muzafer and Carolyn Wood Sherif Papers, of University of Akron. Cummings Center for the History of Psychology; with Muzafer Sherif, 1906-1988, Series 5: Research Studies, 1949-1967, Sub-series 1: 1949 Camp Study, 1949, Box M3551_2, Folder 7 , 1 page(s)