Visual plane cats [data charts]
in Richard D. Walk Papers, of University of Akron. Cummings Center for the History of Psychology (1965); with Richard David Walk, 1920-1999, Series Four: Research Files, 1945-1997. Subseries One: Visual Cliff Research, 1958-1996, Box M4933, Folder 3: Visual cliff animal studies, 1964-1967 , 44 page(s)
