[Letter from D. W. Kempner to Meinhard Galleries, February 23, 1952], letter, February 23, 1952; (https://texashistory.unt.edu/ark:/67531/metapth1343244/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .