[Report by Sergeant of Police Wilson F. Warren to Chief of Police J. E. Curry, April 11, 1964], legal document, April 11, 1964; (https://texashistory.unt.edu/ark:/67531/metapth338588/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .