1942–1943 - Internal museum documents Dates and centres for the travelling exhibition Picasso: Forty Years of His Art
New York, 13 July 1955 - Internal museum documents Internal letter from the Museum of Modern Art, New York, to William Lieberman
16 March 1955 - Press release and communication Press release on a special exhibition featuring 12 of Picasso’s masterpieces in New York’s Museum of Modern Art in 1955