Carta, KU# 4795, The Validation of a Classroom Survival Skills Intervention Package, Correspondence, 1988 - 1990, Box: 10, Folder: 2. 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/452433 Accessed July 08, 2025.