São Paulo, 28 December 1953 - Institutional correspondence Francisco Matarazzo Sobrinho's letter to Daniel-Henry Kahnweiler
São Paulo, 14 February 1954 - Institutional correspondence Francisco Matarazzo Sobrinho's letter to Pablo Picasso, dated 14 February 1954
São Paulo, 4 February 1954 - Institutional correspondence Francisco Matarazzo Sobrinho's letter to Pablo Picasso, dated 4 February 1954
1982 - Conferences and articles New Guernica: offered to the people of the United States of America through their embassy in Spain
São Paulo, 26 December 1952 - Institutional correspondence Francisco Matarazzo Sobrinho's letter to Pablo Picasso, dated 26 December 1952