Battles of Mexico : line of operations of the U.S. Army under the command of Major General Winfield Scott on the 19th and 20th of August, 1847, map, 1847; (https://texashistory.unt.edu/ark:/67531/metadc29454/m1/1/: accessed May 31, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .