Dallas (Tex.). Police Department. [Memo to J. E. Curry from W. P. Gannaway, May 6, 1964], text, May 26, 1964; (https://texashistory.unt.edu/ark:/67531/metapth337172/m1/1/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .