Groves, Robert L. (Bob). Oral History Interview with Robert L. (Bob) Groves, April 30, 2004, text, April 30, 2004; (https://texashistory.unt.edu/ark:/67531/metapth1613646/m1/1/: accessed May 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .