J.W.P Chalmers' Preliminary Report on visit to Mines,, 1937

J.W.P Chalmers' Preliminary Report on visit to Mines,, 1937, Box: 141, Folder: 5. 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/346880 Accessed September 26, 2026.