Blue Ridge Quadrangle, map, 1960; (https://texashistory.unt.edu/ark:/67531/metapth108401/m1/1/: accessed April 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Blue Ridge Quadrangle, map, 1960; (https://texashistory.unt.edu/ark:/67531/metapth108401/m1/1/: accessed April 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .