Sewer-Trap., patent, October 17, 1893; (https://texashistory.unt.edu/ark:/67531/metapth173535/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Sewer-Trap., patent, October 17, 1893; (https://texashistory.unt.edu/ark:/67531/metapth173535/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .