Diedrich-Irwin, Training Speech Clinicians in the Recording and Analysis of Articulatory Behavior, OEG-009-261293-3406 (031), Correspondence, 1969 - 1973, Box: 25, Folder: 2. 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/452911 Accessed May 25, 2025.