Internal-Combustion Engine., patent, September 17, 1907; (https://texashistory.unt.edu/ark:/67531/metapth508917/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Internal-Combustion Engine., patent, September 17, 1907; (https://texashistory.unt.edu/ark:/67531/metapth508917/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .