Signaling Device for Automobiles., patent, June 25, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1258769/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Signaling Device for Automobiles., patent, June 25, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1258769/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .