London, 6 November 1938 - Personal correspondence Roland Penrose's letter to Pablo Picasso, dated 6 November 1938
Mexico, 21 December 1939 - Personal correspondence Juan Larrea's letter to Pablo Picasso, dated 21 December 1939
Cambridge, Massachusetts, 20 November 1939 - Personal correspondence Josep Lluís Sert's letter to Pablo Picasso, dated 20 November 1939
Mexico, 10 July 1947 - Personal correspondence Juan Larrea's letter to Alfred H. Barr Jr., dated 10 July 1947
New York, 20 July 1979 - Press release and communication A communiqué from the Museum of Modern Art, New York, about moving Guernica
São Paulo, 11 March 1953 - Personal correspondence A letter from Paulo E. de Berrêdo Carneiro, dated 11 March 1953
Paris, 4 December 1953 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 4 December 1953
Paris, 25 June 1954 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 25 June 1954
Paris, 14 June 1955 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 14 June 1955
1955 - Press release and communication Thirty individual collectors and eight national museums in Europe and the United States contribute paintings for the first Picasso retrospective in Paris since the war
23 May 1955 - Press release and communication A press release on the opening of the exhibition Picasso at the Musée des Arts Décoratifs, Paris
Paris, 21 December 1955 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 21 December 1955
Amsterdam, 2 December 1955 - Personal correspondence Willem Sandberg's letter to Maurice Lefebvre-Foinet, dated 2 December 1955
Amsterdam, 9 December 1955 - Personal correspondence Willem Sandberg's letter to Maurice Lefebvre-Foinet, dated 9 December 1955
Paris, September 7, 1955 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated September 7, 1955
Paris, 14 March 1956 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 14 March 1956