Cambridge, Massachusetts, 20 November 1939 - Personal correspondence Josep Lluís Sert's letter to Pablo Picasso, dated 20 November 1939
New York, 14 June 1939 - Institutional correspondence Evelyn Ahrend's letter to Alfred H. Barr Jr., dated 14 June 1939
New York, 20 October 1939 - Institutional correspondence Anne Beidberg's letter to Alfred H. Barr Jr.
Paris, 13 October 1937 - Painting Weeping Woman’s Head with Handkerchief [II]. Postscript of Guernica
Paris, 17 October 1937 - Painting Weeping Woman’s Head with Handkerchief [III]. Postscript of Guernica