Stockholm, 23 October 1956 - Institutional correspondence Ernesto de Zulueta's letter to Alberto Martín-Artajo Álvarez
New York, 20 March 1980 - Internal institutional documents An agreement over the conditions and delivery date of Guernica
Madrid, 6 December 1968 - Institutional correspondence Luis Carrero Blanco's letter to Florentino Pérez Embid
Mougins, 14 November 1970 - Institutional correspondence Pablo Picasso's letter to the New York's Museum of Modern Art
Madrid, 2 December 1975 and Berkeley, California, 8 January 1976 - Institutional correspondence A letter from José Mario Armero to Herschel B. Chip, with reply
Internal institutional documents A communiqué from the Spanish government regarding the delivery of Guernica
20 May 1980 - News programme The exhibition Pablo Picasso: A Retrospective featured on the CBS news broadcast
20 May 1980 - News programme The exhibition Pablo Picasso: A Retrospective featured on the ABC news broadcast
1980 - News programme The exhibition Pablo Picasso: A Retrospective featured on the CBS news broadcast
9 September 1981 - News programme A news broadcast shown on the US channel NBC, reporting on the transfer of Guernica to Spain, dated 9 September 1981
10 September 1981 - News programme A news broadcast shown on the US channel ABC, reporting on the transfer of Guernica to Spain
23 October 1981 - News programme A news broadcast shown on the US channel NBC, reporting on the transfer of Guernica to Spain, dated 23 October 1981
Valencia, 27 February 1981 - Institutional correspondence A letter from Manuel García y García to Javier Tusell, dated 27 February 1981
Valencia, 23 June 1981 - Institutional correspondence A letter from Manuel García y García to Javier Tusell, dated 23 June 1981
Paris, June-July 1955 - Institutional correspondence Letters from José Rojas Moreno to Alberto Martín-Artajo Álvarez
Bonn, 16 February 1956 - Institutional correspondence Antonio Mª Aguirre's letter to Alberto Martín-Artajo Álvarez
Brussels, 14 May 1956 - Institutional correspondence A letter from the Spanish ambassador in Belgium to Alberto Martín-Artajo Álvarez
Amsterdam, 6 July 1956 - Institutional correspondence A letter from J. M. Trias de Bes to Alberto Martín-Artajo Álvarez
Oslo, 27 November 1956 - Institutional correspondence A letter from Miguel de Aldasoro to Alberto Martín-Artajo Álvarez