31 March 1965 - Newspapers New Spanish Art to Come to the Fair; Old Masters on First Visit to US Join Modern Art
Madrid, 29 May and 10 June 1981 - Institutional correspondence A letter from Felipe Cons Gorostola to Álvaro Martínez Novillo, and reply
30 May 1996 - Newspapers The Spanish Government and the PNV (Basque Nationalist Party) discuss the transfer of Guernica