Big Sandy Quadrangle, map, 1981; (https://texashistory.unt.edu/ark:/67531/metapth107798/m1/1/: accessed April 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Big Sandy Quadrangle, map, 1981; (https://texashistory.unt.edu/ark:/67531/metapth107798/m1/1/: accessed April 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .