[Letter from T. F. Loughran to C. C. Cox, June 23, 1923], letter, June 23, 1923; (https://texashistory.unt.edu/ark:/67531/metapth1243518/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .