New York, 20 March 1980 - Internal institutional documents An agreement over the conditions and delivery date of Guernica
New York, 30 August 1979 - Institutional correspondence A letter from Ethen Shein to Richard E. Oldenburg
Madrid, 11 December 1980 - Internal institutional documents Javier Tusell's report on negotiations for the transfer of Guernica
Madrid, 20 January 1981 - Internal institutional documents A letter from the general management of Fine Art, Archives, and Libraries regarding a conversation held with William Rubin
New York, 20 March 1980 - Internal institutional documents An agreement to deliver Guernica to the Spanish government
