Rice/O'Brien, Early Childhood Research Institute, (KECRI), KU# 4798, Mid-year Report, January 1, 1991, Box: 66, Folder: 8. 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/455551 Accessed July 11, 2025.