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
1939 - Institutional correspondence Correspondence between the Spanish Refugee Relief Campaign and Alfred H. Barr Jr.
1939 - Internal institutional documents A list of possible donors to the Spanish Refugee Relief Campaign
Los Angeles, 1939 - Invitation Invitation to the opening of the exhibition Picasso's Masterpiece. Guernica and 63 Related Paintings and Drawings at the Stendahl Art Galleries
Madrid, 19 June 1981 - Institutional correspondence A letter from Carlos Robles Piquer to Javier Tusell, dated 19 June 1981
1939 - Internal institutional documents A list of museums and directors to which the Spanish Refugee Relief Campaign offers participation in the tour of Picasso's Guernica