New York, 9 September 1981 - Institutional correspondence An internal letter from Richard E. Oldenburg to staff at the Museum of Modern Art, New York
Internal institutional documents An agreement between the Spanish government and the Museum of Modern Art, New York, drawn up by the Museo del Prado's lawyers
Madrid, 10 June 1981 - Internal institutional documents A letter from Carlos Robles Piquer to Javier Tusell
New York, 3 September 1981 - Internal institutional documents Inventory and conservation report on the works collected by New York's Museum of Modern Art to be sent to Spain
New York, 10 August 1981 - Institutional correspondence A letter from Eloise Ricciardelli to Sharon Zane