Ramp, Eugene, Educational Systems Associates, KU# 2488, Correspondence File, 1982 - 1988, Box: 62, Folder: 34. 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/455455 Accessed July 10, 2025.