Madrid, 1981 - Photograph SIT employees finish placing the 'rolling bridge' in the Casón del Buen Retiro
Madrid, 1981 - Photograph SIT operators place the wooden stretcher on the Guernica canvas in the Casón del Buen Retiro
Madrid, 1981 - Photograph The finishing touches to positioning Guernica from the back in the Casón del Buen Retiro
Madrid, 1981 - Photograph Metal structure without either glass or the painting, with restorers, operators from the SIT transport company and the Guardia Civil (Spain's Military Police) in the Casón del Buen Retiro
Madrid, 21 October 1981 - Internal institutional documents A technical report on the installation and state of preservation of Guernica
Madrid, 3 September - Institutional correspondence Carlos Robles Piquer's letter to Javier Tusell, dated 3 September