Du Pasquier, Hermann. [Handwritten Letter from Hermann Du Pasquier to D. W. Kempner, July 13, 1948], letter, July 13, 1948; (https://texashistory.unt.edu/ark:/67531/metapth1339988/m1/1/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .