Madrid, 9 December 1975 - Institutional correspondence
80 documents have been found archived in Ministerio de Educación, Cultura y Deporte. Archivo General de la Administración.
Madrid, 4 February 1988 - Internal institutional documents
Reply from Spain's Ministry of Culture regarding the questions put forward by Andrés Ollero in the Congress of Deputies
Madrid, 12 February 1976 - Institutional correspondence
A letter from the director-general of Cultural Heritage
Madrid, 16 February 1976 - Institutional correspondence