Madrid, 1981 - Internal institutional documents A letter about the exhibition at the Casón del Buen Retiro
Madrid, 31 July, and Cambridge, Massachusetts, 31 August 1981 - Institutional correspondence Álvaro Martínez Novillo's letter to Josep Lluís Sert, with reply
Madrid, 29 May and 10 June 1981 - Institutional correspondence A letter from Felipe Cons Gorostola to Álvaro Martínez Novillo, and reply
22 November 1980 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 22 November 1980
26 March 1988 - Internal museum documents Opinions on the collection of the Centro de Arte Reina Sofía
Madrid, 10 and 11 April 1987 - Minutes Order of the Offical State Bulletin to create the Advisory Board for the development of the programme Centro de Arte Reina Sofía
