"Education and the Development of Social Attitudes in a Preliterate and in a Modern Community." (A paper read before Symposium on Environmental Influences on Child Development, October 30, 1936, in Washington, D.C., under the auspices of the Society for Research in Child Development.) (Typescript, 11pp.). Unpublished., October 30, 1936, Box: 125, Folder: 27. Morris Edward Opler papers, 14-25-3238. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/240836 Accessed February 18, 2026.