General soil map of Texas., map, 1935; (https://texashistory.unt.edu/ark:/67531/metapth193713/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
General soil map of Texas., map, 1935; (https://texashistory.unt.edu/ark:/67531/metapth193713/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .