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
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, 31 August 1981 - Institutional correspondence John Koegel's letter to Richard E. Oldenburg, dated 31 August 1981
New York, 10 September 1981 - Internal museum documents An internal letter from Louis Estrada to Eloise Ricciardelli
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