General correspondence, Morro Velho,, 1867-1868, 1936, 1960

General correspondence, Morro Velho,, 1867-1868, 1936, 1960, Box: 27, Folder: 6. Saint John d'El Rey Mining Company Records, 1984-12. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/345361 Accessed September 26, 2026.