Tribble, J. E. [Letter from J. E. Tribble to Ernest Marion, August 2, 1943], letter, August 2, 1943; (https://texashistory.unt.edu/ark:/67531/metapth1151672/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .