Hurley, Alfred F. [Letter from Alfred F. Hurley to Mary L. Isham, June 1, 1987], letter, June 1, 1987; (https://texashistory.unt.edu/ark:/67531/metadc1852546/m1/1/: accessed May 29, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .