Paredes, Américo. El Corrido de Gregorio Cortez, A Ballad of Border Conflict. Ph.D. dissertation, The University of Texas, 1956

Paredes, Américo. El Corrido de Gregorio Cortez, A Ballad of Border Conflict. Ph.D. dissertation, The University of Texas, 1956, Box: 87. Américo Paredes Papers, 51244413. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/457798 Accessed September 25, 2026.