The Psychologist and the School. Correspondence, reports, case studies, articles, and proceedings of meetings pertaining to certification requirements for school psychologists, the work of the school psychologist, and related topics, 15 folders., 1924-1954, Box: 3. Ethel Letitia Cornell papers, 2545. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/368665 Accessed April 15, 2026.