New York, 7 March 1956 - Institutional correspondence A telegram from Edgar Craig Schenk to Pablo Picasso
Madrid, 29 May and 10 June 1981 - Institutional correspondence A letter from Felipe Cons Gorostola to Álvaro Martínez Novillo, and reply
Report, 2003 - News programme “El tapiz de Guernica oculto con una cortina azul en la ONU” (Covering of the tapestry Version of Guernica at the UN)