Portable Bracket., patent, August 18, 1908; (https://texashistory.unt.edu/ark:/67531/metapth513203/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Portable Bracket., patent, August 18, 1908; (https://texashistory.unt.edu/ark:/67531/metapth513203/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .