Parks, P. M. [Criminal Intelligence Report to Captain W. P. Gannaway, February 4, 1964], legal document, February 4, 1964; (https://texashistory.unt.edu/ark:/67531/metapth190095/m1/1/: accessed June 4, 2023), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .

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