McLean, Lee Snyder-, PREP-EDD-Evaluation, Demonstration, and Dissemination of a Regional Inter-agency Early Intervention Program (PREP), USDE-HCEEP KU# 4199, February 11, 1983, Box: 51, Folder: 10. 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/455086 Accessed July 15, 2025.