Post-Card Rack, patent, January 4, 1916; (https://texashistory.unt.edu/ark:/67531/metapth859875/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Post-Card Rack, patent, January 4, 1916; (https://texashistory.unt.edu/ark:/67531/metapth859875/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .