New York, 20 March 1980 - Internal institutional documents An agreement over the conditions and delivery date of Guernica
22 November 1980 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 22 November 1980
20 February 1980 - Institutional correspondence A letter from Ricardo de la Cierva Hoces to Adolfo Suárez
New York, 24 March 1980 - Institutional correspondence A letter from Richard Oldenburg and William Rubin to Javier Tusell
Madrid, 28 June 1980 - Institutional correspondence Ricardo de la Cierva Hoces' letter to Javier Tusell
Madrid, 11 September 1980 - Institutional correspondence Javier Tusell's letter to José Pedro Pérez-Llorca
Madrid, 23 and 25 September 1980 - Institutional correspondence Alejandro de Muns' letter to Javier Tusell, with reply
3 October 1980 - Internal institutional documents A confidential letter from Spain's Ministry of Culture regarding negotiations for Guernica
Madrid, 5 November 1980 - Institutional correspondence A letter from Íñigo Cavero to Blanche de Philip P. Weisberg (Blanche Mahler)
1980 - Internal institutional documents Report by the Management Board of Artistic Heritage, Archives and Museums on the moral rights and legislation with regard to Guernica
Madrid, 11 December 1980 - Internal institutional documents Javier Tusell's report on negotiations for the transfer of Guernica
Madrid, 8 February 1982 - Institutional correspondence A letter from Álvaro Martínez Novillo to Pedro J. Ramírez
Madrid, 13 November 1980 - Institutional correspondence A letter from Javier Tusell to Íñigo Cavero, dated 13 November 1980
Madrid, 17 September 1980 - Institutional correspondence A letter from José Mario Armero to Íñigo Cavero
Madrid, September 1980 - Internal institutional documents A report on the requirements for the transfer of Guernica from New York to Spain
New York, 19 May 1980 - Institutional correspondence William Rubin's letter to Rafael Fernández Quintanilla, dated 19 May 1980
New York, 17 June 1980 - Institutional correspondence William Rubin's letter to Rafael Fernández Quintanilla, dated 17 June 1980
New York, 20 March 1980 - Internal institutional documents An agreement to deliver Guernica to the Spanish government
Madrid, January 1982 - Leaflet Didactic leaflet Sección de Arte Siglo XIX, Legado Picasso, Guernica, made by Gabinete Didáctico
Madrid, May to June 1982 - Conferences and articles Lectures on the 19th century and Guernica given as part of the Missions of Art programme held at the Museo Nacional del Prado from May to June 1982