[Certificate by Governor Allan Shivers commissioning T. N. Carswell as Chairman of the Taylor County Parole Board - December 18, 1950], text, December 18, 1950; (https://texashistory.unt.edu/ark:/67531/metapth1397301/m1/1/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .