Oil-Tank., patent, July 18, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511244/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Oil-Tank., patent, July 18, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511244/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .