[Report to W. P. Gannaway by W. S. Biggio, December 11, 1963 #2], report, December 11, 1963; (https://texashistory.unt.edu/ark:/67531/metapth337563/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .