Automatic Computing and Weighing Scale, patent, April 21, 1903; (https://texashistory.unt.edu/ark:/67531/metapth510889/m1/1/: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Automatic Computing and Weighing Scale, patent, April 21, 1903; (https://texashistory.unt.edu/ark:/67531/metapth510889/m1/1/: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .