Madrid, 9 December 1975 - Institutional correspondence A letter from the general director of Artistic and Cultural Heritage, from Spain's Ministry of General Education
Paris, 10 December 1975 - Institutional correspondence Miguel de Lojendio's letter to Spain's Ministry of Culture
16 February 1976 - Institutional correspondence Report for the National Commission of Artistic Heritage
22 November 1980 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 22 November 1980
Madrid, 14 April 1988 - Internal institutional documents A reply from the Ministry of Culture to the questions put forward by Iñaki Anasagasti in the Congress of Deputies
Madrid, 30 March 1988 - Internal institutional documents A letter from the director-general of Fine Arts to the Cabinet of Spain's Ministry of Culture
9 June 1988 - Newspapers Spain's Ministry of Culture rules out the transfer of Picasso's Guernica to Biscay
Madrid, 16 June 1988 - Internal institutional documents Iñaki Anasagasti's questions to the Congress of Deputies