Rome, 18 February 1954 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 18 February 1954
Rome, 24 March 1954 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 24 March 1954
Rome, 24 August 1954 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 24 August 1954
Rome, 15 September 1954 - Institutional correspondence Eugenio Reale's letter Pablo Picasso, dated 15 September 1954
New York, 19 May 1980 - Institutional correspondence William Rubin's letter to Rafael Fernández Quintanilla, dated 19 May 1980
New York, 17 June 1980 - Institutional correspondence William Rubin's letter to Rafael Fernández Quintanilla, dated 17 June 1980
New York, 20 March 1980 - Internal institutional documents An agreement to deliver Guernica to the Spanish government
New York and Madrid, June 1988 - Institutional correspondence Correspondence between William Rubin and Alfonso E. Pérez Sánchez
Chicago, 11 October 1939 - Institutional correspondence Charles Goodspeed's telegram to Pablo Picasso
Rome, 5 December 1952 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, date 5 December 1952
Rome, 10 December 1952 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 10 December 1952
Rome, 1 January 1954 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 1 January 1954
Rome, 19 June 1953 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 19 June 1953
Rome, 24 June 1953 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 24 June 1953
Rome, 18 July 1953 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 18 July 1953
Rome, 7 August 1953 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 7 August 1953
Rome, 17 August 1953 - Institutional correspondence Eugenio Real's letter to Pablo Picasso, dated 17 August 1953
Rome, 25 September 1953 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 25 September 1953
Rome, 26 November 1956 - Institutional correspondence Eugenio Reale's letter to Pablo Picasso, dated 26 November 1956
