A Study to Determine if there are Significant Interacting Physical, Mental, and Emotional Factors Developed by Parents of Sherman, Texas, which Influence Readiness for Beginning Reading, thesis, August 1950; (https://digital.library.unt.edu/ark:/67531/metadc163812/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .