New York, 1978 - Internal museum documents An internal letter on the departure of Guernica from the Museum of Modern Art, New York
New York, 26 June 1978 - Institutional correspondence A letter from Judith Cousins to William Burback
New York, 30 September 1978 - Internal museum documents A letter featuring Roland Dumas's statements about Guernica
Paris, 1 March 1975 - Personal correspondence Claude Picasso's letter to William S. Lieberman, dated 1 March 1975
