[Copy #2 of the Power of Attorney from Fernando del Valle to Lorenzo de Zavala, November 29, 1833], letter, November 14, 1905; (https://texashistory.unt.edu/ark:/67531/metapth5912/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .