Universal Lock and Latch., patent, September 14, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1257650/m1/3/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Universal Lock and Latch., patent, September 14, 1920; (https://texashistory.unt.edu/ark:/67531/metapth1257650/m1/3/: accessed June 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .