Carta, KU# 4795-2, The Validation of a Classroom Survival Skills Intervention Package, January 3, 1989, Box: 10, Folder: 4. 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/452435 Accessed July 12, 2025.