Troy Quadrangle, map, 1990; (https://texashistory.unt.edu/ark:/67531/metapth107124/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
Troy Quadrangle, map, 1990; (https://texashistory.unt.edu/ark:/67531/metapth107124/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .