Agitator., patent, February 23, 1915; (https://texashistory.unt.edu/ark:/67531/metapth859383/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Agitator., patent, February 23, 1915; (https://texashistory.unt.edu/ark:/67531/metapth859383/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .