Weighing-Scoop., patent, April 30, 1907; (https://texashistory.unt.edu/ark:/67531/metapth513895/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Weighing-Scoop., patent, April 30, 1907; (https://texashistory.unt.edu/ark:/67531/metapth513895/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .