Madrid, 18 July 1978 - Institutional correspondence A letter from the Management Board of Cultural Relations to the director-general of Artistic Heritage, Archives and Museums
Madrid, 11 December 1979 - Institutional correspondence Marcelino Oreja's letter to Manuel Clavero Arévalo
Buenos Aires, 28 November 1979 - Institutional correspondence Rafael Fernández Quintanilla's letter to José Joaquín Puig de la Bellacasa
Paris, 13 November 1979 - Institutional correspondence A letter from Roland Dumas to Rafael Fernández Quintanilla
Madrid, 19 October 1979 - Institutional correspondence Javier Tusell's letter to Horacio Sáenz Guerrero
Buenos Aires, 17 September 1979 - Institutional correspondence Rafael Fernández Quintanilla's letter to Javier Tusell, dated 17 September 1979