Castañeda, Carlos E. [Letter from Carlos E. Castañeda to John J. Hererra - 1944-01-23], letter, January 23, 1944; (https://texashistory.unt.edu/ark:/67531/metapth248739/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .