Mougins, 14 November 1970 - Institutional correspondence Pablo Picasso's letter to the New York's Museum of Modern Art
Madrid, 2 December 1975 and Berkeley, California, 8 January 1976 - Institutional correspondence A letter from José Mario Armero to Herschel B. Chip, with reply
Paris, 3 October 1948 - Institutional correspondence Pablo Picasso's letter to Alfred H. Barr Jr., dated 3 October 1948
Pars, 9 February 1955 - Institutional correspondence Pablo Picasso's letter to Alfred H. Barr Jr., dated 9 February 1955
Amsterdam and Brussels, 1956 - Exhibition catalogue Guernica: avec 60 études et variantesGuernica: met 60 studies et varianten
Berlin, 1975 - Exhibition catalogue Exhibition catalogue for Kunst und Politik am Beispiel Guernica. Picasso und der Spanische Bürgerkrieg
12 June-30 August 1974 - Exhibition catalogue Catalogue file of the exhibition Equipo Crónica at the Musée d'Art Moderne de la Ville, Paris