27. "Competencia" pen and ink (16" x l0"), 1973 September 12

27. "Competencia" pen and ink (16" x l0"), 1973 September 12, Box: 6, Folder: 13. Manuel (Chaca) Ramírez Photographs, 22870067. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/362769 Accessed September 26, 2026.