Blackshear, A. H., Jr. [Letter from A. H. Blackshear, Jr. to Harold J. Muckley, June 25, 1951], letter, June 25, 1951; (https://texashistory.unt.edu/ark:/67531/metapth1480657/m1/1/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .