London, 6 November 1938 - Personal correspondence Roland Penrose's letter to Pablo Picasso, dated 6 November 1938
New York, 9 September 1981 - Institutional correspondence An internal letter from Richard E. Oldenburg to staff at the Museum of Modern Art, New York
New York, 8 September 1981 - Photograph The staff at New York's Museum of Modern Art packing Guernica
9 September 1981 - Internal museum documents Internal communiqué from Richard Oldenburg, director of the Museum of Modern Art, New York, on the departure of Guernica