Contains materials generated by Mark Allen, including minutes, correspondence, memoranda, class instructional material, resource material used in compiling the department's history, news clippings, reports, and notes. Most of the material was generated by Allen before and after he served as chairman of the Department of Psychology at Brigham Young University.

Typewritten drafts of articles for publication, correspondence, and memoranda. Also included are handwritten notes, questionnaires, and annotations. The materials relate to Bradley's research on the Utah State training school, the Utah Valley Hospital, and the Sprouse-Reitz Co.