Interview with Judge R. Black, May 17, 1966, text, May 17, 1966; (https://texashistory.unt.edu/ark:/67531/metapth865942/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Interview with Judge R. Black, May 17, 1966, text, May 17, 1966; (https://texashistory.unt.edu/ark:/67531/metapth865942/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .