O'Brien, Marion, Motor Activity and Develop of Spatial Skills ADAMHA Small Grant Program, Correspondence, 1984 - 1985, Box: 54, Folder: 15. 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/455205 Accessed May 17, 2025.