Herrera, John J. [Letter from John J. Herrera to Gus C. Garcia - 1948-04-07], letter, April 7, 1948; (https://texashistory.unt.edu/ark:/67531/metapth248868/m1/1/: accessed November 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .