Growth studies and characteristics of H.S. Pupils - material relating to the Harvard Growth Studies, the tasks of early secondary education, longitudinal studies of individual development, the characteristics of high school pupils. Correspondence, notes, and relevant items, 7 folders., 1950-1954, undated

Growth studies and characteristics of H.S. Pupils - material relating to the Harvard Growth Studies, the tasks of early secondary education, longitudinal studies of individual development, the characteristics of high school pupils. Correspondence, notes, and relevant items, 7 folders., 1950-1954, undated, Box: 3. Ethel Letitia Cornell papers, 2545. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/368674 Accessed December 13, 2025.