Herrera, John J. [Letter from John J. Herrera to J.C. Machuca - 1954-01-19], letter, January 19, 1954; (https://texashistory.unt.edu/ark:/67531/metapth250457/m1/1/: accessed May 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .