Texas. Department of Transportation. Construction and Maintenance Division. Texas Construction and Maintenance Report: July 1997, report, July 1, 1997; (https://texashistory.unt.edu/ark:/67531/metapth1032482/m1/1/: accessed June 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .

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