E.G. Joint Venture Pipe Inc., photograph, 1979; (https://texashistory.unt.edu/ark:/67531/metapth59756/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
E.G. Joint Venture Pipe Inc., photograph, 1979; (https://texashistory.unt.edu/ark:/67531/metapth59756/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .