Tongue-Support., patent, February 20, 1894; (https://texashistory.unt.edu/ark:/67531/metapth173649/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Tongue-Support., patent, February 20, 1894; (https://texashistory.unt.edu/ark:/67531/metapth173649/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .