Mine-Sweeper and Ship-Shield, patent, October 15, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1257942/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Mine-Sweeper and Ship-Shield, patent, October 15, 1918; (https://texashistory.unt.edu/ark:/67531/metapth1257942/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .