A Survey and Critical Analysis of the Preparation of Instrumental Music Teachers with the Recommendations for Altering the Curriculum and Content of the Courses, thesis, August 1941; (https://digital.library.unt.edu/ark:/67531/metadc699498/m1/2/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .