Carrier, Joe, John H. Hollis, Use of Non Speech Responses to Teach Communication, February 28, 1979, Box: 8, Folder: 24. 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/452402 Accessed July 18, 2025.