The History of Horn Playing in Los Angeles from 1920 to 1970 : a Lecture Recital, Together With Three Recitals of Selected Works for Horn by M. Haydn, Franz, Britten, Mozart, Koetsier, Hindemith, Herzogenberg, Rossini, Stevens and others, thesis or dissertation, May 1999; (https://digital.library.unt.edu/ark:/67531/metadc1038828/m1/2/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .