Flexible Metallic Hose, patent, August 17, 1909; (https://texashistory.unt.edu/ark:/67531/metapth514955/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Flexible Metallic Hose, patent, August 17, 1909; (https://texashistory.unt.edu/ark:/67531/metapth514955/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .