New York, 16 December 1954 - Institutional correspondence A letter from Alfred H. Barr Jr. to William A. M. Burden, René d'Harnoncourt and James Thrall Soby
March, 1955 - Internal museum documents Annotation on the exhibit label for the exhibition Picasso: 12 Masterworks
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