New York, 9 September 1981 - Institutional correspondence
225 documents have been found dated from 1981.
New York, 23 March 1981 - Internal museum documents
An internal letter from New York's Museum of Modern Art on the 1974 attack on Guernica.
ca. 1981 - Newspapers
The Guernica Imbroglio. Al international Tug-of-War over Picasso's Protest Painting
New York, 8 April 1981 - Press release and communication