Bank-Protector., patent, March 17, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172639/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Bank-Protector., patent, March 17, 1891; (https://texashistory.unt.edu/ark:/67531/metapth172639/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .