Guerra, Julia B. [Postcard from Julia B. Guerra to Mary Hall, May 6, 1956], postcard, May 6, 1956; (https://texashistory.unt.edu/ark:/67531/metapth836086/m1/1/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .