Latch for Grain-Car Doors., patent, February 26, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1258332/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Latch for Grain-Car Doors., patent, February 26, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1258332/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .