[Close up of Big Bend desert mountain], photograph, 1969; (https://texashistory.unt.edu/ark:/67531/metapth39699/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Close up of Big Bend desert mountain], photograph, 1969; (https://texashistory.unt.edu/ark:/67531/metapth39699/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .