[Letter from Elizabeth Upshur Teackle to her husband, Littleton Dennis Teackle, March 13, 1810], letter, March 13, 1810; (https://texashistory.unt.edu/ark:/67531/metapth1677153/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .