Mexico City, 26 September 1968 - Institutional correspondence Óscar Urrutia's telegram to Carol K. Uht
Peñaranda de Bracamonte, Salamanca, 2013 - Photograph Exhibition Guernica espitirual, by Félix Orgaz Botejara, Centro de Desarrollo Sociocultural (Fundación Germán Sánchez Ruipérez)