Nara Visa Quadrangle Side: 1 of 1
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Nara Visa Quadrangle, map, 1973; Reston, Virginia. (https://texashistory.unt.edu/ark:/67531/metapth457081/m1/1/?q=%22Geological+Survey+%28U.S.%29%22: accessed June 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.