The American Flag. (Matamoros, Tamaulipas, Mexico), Vol. 1, No. 26, Ed. 1 Sunday, August 23, 1846, newspaper, August 23, 1846; (https://texashistory.unt.edu/ark:/67531/metapth478338/m1/1/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .