Willis, John Todd, Jr. [Letter from John Todd Willis, Jr. to his Parents, October 20, 1943], letter, October 20, 1943; (https://texashistory.unt.edu/ark:/67531/metapth599724/m1/1/: accessed December 15, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .