Photographic-Printing Machine, patent, September 17, 1912; (https://texashistory.unt.edu/ark:/67531/metapth511837/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Photographic-Printing Machine, patent, September 17, 1912; (https://texashistory.unt.edu/ark:/67531/metapth511837/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .