Gibson, E. J., Gibson, J. J., Pick, A.D., Osser, H. A developmental study of the discrimination of letter-like forms. Journal of Comparative and Psychological Psychology, 1962, 55, 897-906., 1962

Gibson, E. J., Gibson, J. J., Pick, A.D., Osser, H. A developmental study of the discrimination of letter-like forms. Journal of Comparative and Psychological Psychology, 1962, 55, 897-906., 1962, Box: 10, Folder: 25. James J. Gibson papers, 14-23-1832. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/820215 Accessed January 19, 2026.