Dallas (Tex.). Police Department. [Report to W. P. Gannaway by W. S. Biggio, January 9, 1964 #1], report, January 9, 1964; (https://texashistory.unt.edu/ark:/67531/metapth337816/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .