Herrera, John J. [Letter from John J. Herrera to Felix H. Morales - 1947-06-30], letter, June 30, 1947; (https://texashistory.unt.edu/ark:/67531/metapth249417/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .