Douglas, Leon; Wade, Henry; Alexander, William F.; Watts, Frank W.; Alsup, Al & Williamson, James M. Cause Number 39,613. Brief for Appellee, The State of Texas, legal document, May 1966; (https://texashistory.unt.edu/ark:/67531/metapth1117883/m1/1/: accessed July 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .