[Letter from Jesús Cárdenas to the Laredo Alcalde, May 13, 1839], letter, 1839-05~; (https://texashistory.unt.edu/ark:/67531/metapth873368/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .