12 June-30 August 1974 - Exhibition catalogue Catalogue file of the exhibition Equipo Crónica at the Musée d'Art Moderne de la Ville, Paris
Paris, 30 October 1971 - Institutional correspondence A letter from Luis López Ballesteros to Alfredo Sánchez Bella
10 January 1998 - Newspapers Experts from major museums around the world analyse the conservation of "Guernica"