Dallas (Tex.). Police Department. [Report to W. P. Gannaway by H. M. Hart, February 14, 1964 #1], report, February 14, 1964; (https://texashistory.unt.edu/ark:/67531/metapth339200/m1/1/: accessed May 21, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .