Check-Book-Stub Holder., patent, April 10, 1917; (https://texashistory.unt.edu/ark:/67531/metapth859403/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Check-Book-Stub Holder., patent, April 10, 1917; (https://texashistory.unt.edu/ark:/67531/metapth859403/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .