Stillpass, Leo J. [Letter from Leo J. Stillpass to the Kempner Family, December 30, 1955], letter, December 30, 1955; (https://texashistory.unt.edu/ark:/67531/metapth1506472/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .