A Descriptive Account of United States Government Documents Pertaining to the History of United States Diplomatic Relations with Mexico, 1821-1846, thesis, May 1976; (https://digital.library.unt.edu/ark:/67531/metadc503978/m1/42/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .