Heffner, Henry, Behavioral Analysis of the role of the Auditory Cortex, KU# 4351, NS-12992, June 25, 1986, Box: 42, Folder: 9. 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/454033 Accessed July 14, 2025.