CBD Topics System Map, map, May 1970; (https://texashistory.unt.edu/ark:/67531/metapth606699/m1/1/: accessed October 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
CBD Topics System Map, map, May 1970; (https://texashistory.unt.edu/ark:/67531/metapth606699/m1/1/: accessed October 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .