Oil-Press., patent, October 13, 1908; (https://texashistory.unt.edu/ark:/67531/metapth510586/m1/4/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Oil-Press., patent, October 13, 1908; (https://texashistory.unt.edu/ark:/67531/metapth510586/m1/4/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .