Reconnoissance soil survey of South Texas, book, June 16, 1910; (https://texashistory.unt.edu/ark:/67531/metapth19753/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Reconnoissance soil survey of South Texas, book, June 16, 1910; (https://texashistory.unt.edu/ark:/67531/metapth19753/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .