New York, 10 March 1955 - Institutional correspondence Alfred H. Barr Jr.'s letter to Pablo Picasso, dated 10 March 1955
Valencia, 27 February 1981 - Institutional correspondence A letter from Manuel García y García to Javier Tusell, dated 27 February 1981
Valencia, 23 June 1981 - Institutional correspondence A letter from Manuel García y García to Javier Tusell, dated 23 June 1981