Tokyo, 20 November 1962 - Institutional correspondence Akira Jin's letter to Pablo Picasso, dated 20 November 1962
New York, 11 June 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to John Rockefeller
Tokyo, 31 August 1962 - Institutional correspondence Akira Jin's letter to Carol K. Uht, dated 31 August 1962
Tokyo, 21 November 1962 - Institutional correspondence Akira Jin's letter to Carol K. Uht, dated 21 November 1962
Tokyo, 1 April 1963 - Institutional correspondence Akira Jin's letter to Pablo Picasso, dated 1 April 1963
3 December 1937 - Newspapers Picasso's Guernica included in an exhibition in Oslo, Copenhagen and Stockholm
Oslo, 27 November 1956 - Institutional correspondence A letter from Miguel de Aldasoro to Alberto Martín-Artajo Álvarez
1992-1993 - Internal museum documents Exhibition folder. Picasso: The Love and the Anguish. The Road to Guernica
Madrid, 8 February 1995 - Internal institutional documents A loan approval form for the exhibition Picasso: The Love and the Anguish. The road to Guernica
Oslo, 1938 - Exhibition catalogue Catalogue of the exhibition Henri Matisse, Picasso, G. Braque, Laurens at Kunstnernes Hus, Oslo
New York, 17 June 1957 - Institutional correspondence John Rockefeller's letter to Alfred H. Barr Jr.
New York, 11 June 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to René d'Harnoncourt, dated 11 June 1957
