Marcello, Ronald E. & McCall, Dean M. Oral History Interview with Dean M. McCall, February 26, 1971, book, February 26, 1971; (https://texashistory.unt.edu/ark:/67531/metadc306715/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .