London, 6 November 1938 - Personal correspondence Roland Penrose's letter to Pablo Picasso, dated 6 November 1938
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