[Drilling Barge "Don McMahon"], photograph, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth37450/m1/1/: accessed April 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
[Drilling Barge "Don McMahon"], photograph, Date Unknown; (https://texashistory.unt.edu/ark:/67531/metapth37450/m1/1/: accessed April 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .