[Heavy Equipment at Work], photograph, January 2006; (https://texashistory.unt.edu/ark:/67531/metapth224095/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Heavy Equipment at Work], photograph, January 2006; (https://texashistory.unt.edu/ark:/67531/metapth224095/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .