27. Entrance of the tunnel F.C. Ogarrio por Catorce, by Emilio G. Lobato, San Luís Potosí

27. Entrance of the tunnel F.C. Ogarrio por Catorce, by Emilio G. Lobato, San Luís Potosí, Box: 24. Genaro García Photograph Collection, 29763305. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/344246 Accessed September 26, 2026.