General highway map Robertson County Texas, map, 1958; (https://texashistory.unt.edu/ark:/67531/metapth190635/m1/1/: accessed May 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
General highway map Robertson County Texas, map, 1958; (https://texashistory.unt.edu/ark:/67531/metapth190635/m1/1/: accessed May 1, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .