Copenhagen, 31 October 1956 - Institutional correspondence Lars Rostrup Boyesen's letter to Pablo Picasso
Copenhagen, 31 October 1956 - Institutional correspondence Lars Rostrup Boyesen's letter to Daniel-Henry Kahnweiler
Copenhagen, 31 October 1956 - Institutional correspondence Lars Rostrup Boyesen's letter to the Museum of Modern Art, New York
Paris, 6 November 1956 - Institutional correspondence Daniel-Henry Kahnweiler's letter to Lars Rostrup Boyesen
New York, 21 November 1956 - Institutional correspondence Alfred H. Barr Jr.'s letter to Lars Rostrup Boyesen
Philadelphia, 18 September 1957 - Institutional correspondence Henry Clifford's letter to Pablo Picasso
New York, 3 December 1957 - Internal museum documents A letter from Dorothy C. Miller to Monroe Wheeler
3 December 1937 - Newspapers Picasso's Guernica included in an exhibition in Oslo, Copenhagen and Stockholm
Philadelphia, 1958 - Exhibition catalogue Catalogue for the exhibition Picasso: 75th Anniversary at the Philadelphia Museum of Art
New York, 6 December 1957 - Institutional correspondence Monroe Wheeler's letter to Dorothy Miller and Alfred H. Barr Jr.
10 March 1957 - Internal museum documents A provisional list of Pablo Picasso works on loan at the Museum of Modern Art, New York