Membership credential for the CTM - the Sindicato de Trabajadores de construction etc. (the union of construction etc.) belonging to Diego Méndez Sántiz (Ton), dated September 1967 San Cristobal de las Casas. The card states that he is an active member of the organization and that because of that 'we' (the organizers) ask that the civil authorities and the military, take the necessary considerations fior the emancipation of Mexico.