R. L. Polk & Co's. Sherman City Directory, 1925
R. L. Polk & Co's. Sherman City Directory, 1925, book, 1925; Sioux City, Iowa. (texashistory.unt.edu/ark:/67531/metapth113798/: accessed August 16, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Austin College.