[Letter from John J. Herrera to Willie Aguayo], letter, October 6, 1962; (https://texashistory.unt.edu/ark:/67531/metapth248823/m1/2/: accessed May 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Letter from John J. Herrera to Willie Aguayo], letter, October 6, 1962; (https://texashistory.unt.edu/ark:/67531/metapth248823/m1/2/: accessed May 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .