New York, 7 October 1953 - Institutional correspondence A letter from Letitia T. Howe to Pablo Picasso
1 October 1953 - Press release and communication Press release from the Museum of Modern Art, New York, on Guernica's journey to Europe
20 September 1954 - Institutional correspondence Maurice Jardot's letter to Jaime Sabartés, dated 20 September 1953