"The First Half-Century of Spanish Dominion in Mexico, 1522-1572," Francis Borgia Steck, undated

"The First Half-Century of Spanish Dominion in Mexico, 1522-1572," Francis Borgia Steck, undated, Box: 23, Folder: 7. Charles W. Hackett Papers, 2010-22. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/490555 Accessed September 25, 2026.