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
Madrid, 21 October 1981 - Internal institutional documents A technical report on the installation and state of preservation of Guernica
Madrid, 3 September - Institutional correspondence Carlos Robles Piquer's letter to Javier Tusell, dated 3 September
Madrid, 1981 - Photograph Zenithal view of the reproduction of Guernica to test the installation in the Casón del Buen Retiro
Madrid, 1981 - Photograph Placing the reproduction of Guernica for the test installation in the Casón del Buen Retiro
Madrid, 1 June 1981 - Internal institutional documents An internal letter from Javier Tusell to Íñigo Cavero
Madrid, 19 August 1981 - Internal institutional documents A reminder from the general management of Fine Arts, Archives and Libraries regarding the arrival of Guernica to Spain
Madrid, 20 January 1981 - Internal institutional documents A letter from the general management of Fine Art, Archives, and Libraries regarding a conversation held with William Rubin
Madrid, 14 August 1981 - Internal institutional documents A report by SIT for the general management of Fine Art, Archives, and Libraries regarding the transfer of the painting
Internal institutional documents An agreement between the Spanish government and the Museum of Modern Art, New York, drawn up by the Museo del Prado's lawyers
ca. 1981 - Internal institutional documents A report by Javier Tusell, director-general of Fine Arts on his trip to France and his visit to Pablo Picasso's heirs
30 June 1981 - Institutional correspondence Letters from Íñigo Cavero to Pablo Picasso's heirs, dated 30 June 1981
23 January 1981 - Internal institutional documents A report on the state of negotiations to bring Guernica to Spain
1981 - Internal institutional documents A communiqué from Spain's Ministry of Culture about the state of negotiations with the Picasso family to bring Guernica to Spain
Madrid, 25 February and Mexico City, 16 April 1981 - Institutional correspondence Javier Tusell's letter to Wenceslao Roces, and the reply
Madrid, 10 June 1981 - Internal institutional documents A letter from Carlos Robles Piquer to Javier Tusell
Madrid, 13 June 1981 - Institutional correspondence Letters from Íñigo Cavero Pablo Picasso's heirs, dated 13 June 1981
Madrid, 13 June 1981 - Institutional correspondence A letter from Álvaro González de Mesa to Javier Tusell
Paris, 12 May 1981 - Institutional correspondence Rafael Fernández Quintanilla's letter to Carlos Robles Piquer
New York, 3 September 1981 - Internal institutional documents Inventory and conservation report on the works collected by New York's Museum of Modern Art to be sent to Spain
Paris, ca. 1981 - Institutional correspondence A communiqué from Rafael Fernández Quintanilla on the viewpoint of Pablo Picasso's heirs
Madrid, 4 February 1981 - Institutional correspondence A letter from Javier Tusell to Íñigo Cavero, dated 4 February 1981
ca. 1981 - Manuscript Comments on the declarations of Blanche Mahler regarding the arrival of Guernica to New York
Salamanca, 22 July 1981 - Institutional correspondence A letter from Mª Teresa Díez de los Ríos to Javier Tusell
Madrid, 19 June 1981 - Institutional correspondence A letter from Carlos Robles Piquer to Javier Tusell, dated 19 June 1981
20 January 1981 - Personal notes A photocopied note on Guernica, written by the director-general of Fine Arts, Javier Tusell, and dated incorrectly as 20 January 1981 when, according to its content, the date is more likely to be 20 August
New York, 8 September 1981 - Internal institutional documents A confidential and private document signed by Álvaro Martínez-Novillo and José María Cabrera in New York
Madrid, 24 September 1981 - Conservation documents A work plan to protect and display Guernica and its sketches in the Casón del Buen Retiro, written by the company Cubiertas and Mzov