New York, 20 March 1980 - Internal institutional documents An agreement over the conditions and delivery date of Guernica
New York, 20 July 1979 - Press release and communication A communiqué from the Museum of Modern Art, New York, about moving Guernica
New York, 8 April 1981 - Press release and communication A press release from New York's Museum of Modern Art concerning a Spanish delegation's request to send Guernica to Spain
New York, 16 October 1981 - Institutional correspondence John Koegel's letter to Javier Tusell, dated 16 October 1981
New York, 16 October 1981 - Institutional correspondence John Koegel's letter to Javier Tusell, dated 16 October 1981
New York, 16 October 1981 - Institutional correspondence John Koegel's letter to Javier Tusell, dated 16 October 1981
New York, 8 September 1981 - Photograph The staff at New York's Museum of Modern Art packing Guernica
Madrid, 25 October 1981 - TV programme The RTVE programme on installing Guernica inside the Casón del Buen Retiro
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
Madrid, 1981 - Internal museum documents Record sheet of the entry of Guernica into the Casón del Buen Retiro, Madrid
Madrid, 1981 - Internal institutional documents A letter about the exhibition at the Casón del Buen Retiro
Madrid, 31 July, and Cambridge, Massachusetts, 31 August 1981 - Institutional correspondence Álvaro Martínez Novillo's letter to Josep Lluís Sert, with reply
Madrid, 29 May and 10 June 1981 - Institutional correspondence A letter from Felipe Cons Gorostola to Álvaro Martínez Novillo, and reply
22 November 1980 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 22 November 1980