MacKay and Schnellman's Provisional Summary: The Iron Deposits of Mines,, 1955

MacKay and Schnellman's Provisional Summary: The Iron Deposits of Mines,, 1955, Box: 143, Folder: 7. 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/346904 Accessed September 26, 2026.