Zavala, Lorenzo de. [Letter from Lorenzo de Zavala to Antonio Lopez de Santa Anna, March 14, 1829], letter, March 14, 1829; (https://texashistory.unt.edu/ark:/67531/metapth6018/m1/1/: accessed December 16, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .