Cornwall, F. I. [Report from F. I. Cornwall to Chief J. E. Curry, December 3, 1963], report, December 3, 1963; (https://texashistory.unt.edu/ark:/67531/metapth337927/m1/1/: accessed September 23, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .