Dixon, Lois, Conditional Stimulus Control over Choice Responding, HD-11194-01, $40,904, 4733-x706-1, September 30, 1977-August 31, 1978, Box: 25, Folder: 18. University of Kansas Schiefelbusch Institute for Life Span Studies records, RG 35. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/452927 Accessed July 20, 2025.