[Photograph of Dragon's Teeth Fortifications], photograph, [1943..1945]; (https://texashistory.unt.edu/ark:/67531/metapth612500/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Photograph of Dragon's Teeth Fortifications], photograph, [1943..1945]; (https://texashistory.unt.edu/ark:/67531/metapth612500/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .