Protecting Shores., patent, September 27, 1898; (https://texashistory.unt.edu/ark:/67531/metapth513248/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Protecting Shores., patent, September 27, 1898; (https://texashistory.unt.edu/ark:/67531/metapth513248/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .