Fort Worth and Denver City Railway Company. [Letter from Joseph V. Maxwell to I. H. Kempner, July 23, 1949], letter, June 23, 1949; (https://texashistory.unt.edu/ark:/67531/metapth1471388/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .