Garcia, Gustavo C. [Letter from Gus C. Garcia to John J. Herrera - 1963-09-27], letter, September 27, 1963; (https://texashistory.unt.edu/ark:/67531/metapth248878/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .