Flying-Machine., patent, December 12, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511648/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Flying-Machine., patent, December 12, 1911; (https://texashistory.unt.edu/ark:/67531/metapth511648/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .