Grease-Trap., patent, May 8, 1894; (https://texashistory.unt.edu/ark:/67531/metapth173720/m1/3/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Grease-Trap., patent, May 8, 1894; (https://texashistory.unt.edu/ark:/67531/metapth173720/m1/3/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .