Lingwall, James B., Professional Training in Language Intervention with Developmentally Disabled Children, 2405/6014-2, 55P-35705/7-02, $40,920.00, August 1, 1972-July 31, 1973, Box: 49, Folder: 35. 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/454301 Accessed July 13, 2025.