Campbell, Andrew Donaldson. [Letter from Andrew D. Campbell to Elizabeth Upshur Teackle, March 6, 1825], letter, March 6, 1825; (https://texashistory.unt.edu/ark:/67531/metapth1687116/m1/1/: accessed June 19, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .