CEC 57th Annual International Convention, Dallas, Texas, April 24-27, 1979, 1979, Box: 61, Folder: 31. 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/448024 Accessed July 09, 2025.