Starter., patent, March 5, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1258291/m1/6/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Starter., patent, March 5, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1258291/m1/6/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .