Swinging Gate., patent, April 10, 1888; (https://texashistory.unt.edu/ark:/67531/metapth171743/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Swinging Gate., patent, April 10, 1888; (https://texashistory.unt.edu/ark:/67531/metapth171743/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .