Madrid, 17 December 1936 - Institutional correspondence Antonio Rodríguez Morey's, Manuel Azaña's and Jesús Hernández Tomás's letter to Pablo Picasso
Madrid, 3 September - Institutional correspondence Carlos Robles Piquer's letter to Javier Tusell, dated 3 September
Madrid, 10 June 1981 - Internal institutional documents A letter from Carlos Robles Piquer to Javier Tusell
Madrid, 26 September 1936 - Internal institutional documents Certificate of appointment for Pablo Picasso as director of the Museo Nacional del Prado
Madrid, 19 June 1981 - Institutional correspondence A letter from Carlos Robles Piquer to Javier Tusell, dated 19 June 1981