Tongue-Support., patent, December 12, 1893; (https://texashistory.unt.edu/ark:/67531/metapth173589/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Tongue-Support., patent, December 12, 1893; (https://texashistory.unt.edu/ark:/67531/metapth173589/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .