Lattimore, SEIK Evaluation Project, 5480-0705 (2122), May 2-September 30, 1987, Box: 47, Folder: 20. 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/454220 Accessed May 13, 2025.