Charles & Company. [Letter from Charles & Company to I. H. Kempner, February 12, 1952], letter, February 12, 1952; (https://texashistory.unt.edu/ark:/67531/metapth1456924/m1/1/: accessed July 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .