Parrott, H. G. [Letter from Captain H. G. Parrott to Major Thomas N. Carswell - October 2, 1941], letter, October 2, 1941; (https://texashistory.unt.edu/ark:/67531/metapth1397777/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .