Carswell, T. N. (Thomas Norwood). [Letter from Major T. N. Carswell to Major L. E. Newton - February 13, 1941], letter, February 13, 1941; (https://texashistory.unt.edu/ark:/67531/metapth1398204/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .