Vegetation Types of Texas, map, September 2006; (https://texashistory.unt.edu/ark:/67531/metapth637409/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Vegetation Types of Texas, map, September 2006; (https://texashistory.unt.edu/ark:/67531/metapth637409/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .