New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 10 March 1955
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
New York, 4 November 1944 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 4 November 1944
Paris, 3 October 1948 - Institutional correspondence Pablo Picasso's letter to Alfred H. Barr Jr., dated 3 October 1948
New York, 9 July 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 9 July 1956
New York, 20 May 1954 - Institutional correspondence Alfred H. Barr Jr.'s telegram to Pablo Picasso, dated 20 May 1954
Paris, 25 June 1954 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 25 June 1954
New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 10 March 1955
Paris, 14 June 1955 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 14 June 1955
New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Dorothy Miller and Dorothy Dudley
New York, 11 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Daniel-Henry Kahnweiler, dated 11 March 1955
New York, 31 March 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 31 March 1956
New York, 12 May 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 12 May 1956
Paris, 17 May 1956 - Personal correspondence Daniel-Henry Kahnweiler's letter to Pablo Picasso, dated 17 May 1956
New York, 17 June 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter Pablo Picasso, dated 17 June 1957
New York, 17 December 1957 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 17 December 1957
New York, 18 April 1958 - Institutional correspondence A telegram from Alfred H. Barr Jr. to Pablo Picasso, dated 18 April 1958
New York, 31 December 1959 - Institutional correspondence Alfred H. Barr Jr.'s letter Pablo Picasso, dated 31 December 1959
15 September 1960 - Internal museum documents A cheque for Pablo Picasso in payment for the reproductions of Guernica and Three Musicians
New York, 1952 - Photograph Guernica in the exhibition Picasso Between the Wars, 1919-1939 at New York's Museum of Modern Art, New York
23 November 1939 - Personal correspondence Francisco de Troya's letter to Pablo Picasso, dated 23 November 1939
New York, 12 September 1939 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 12 September 1939