New York, 10 July 1939 - Institutional correspondence Blanche Mahler's letter to Grace L. McCann Morley
2 May 1939 - Internal institutional documents A draft text for the invitation to the exhibition Picasso's Guernica at the Valentine Gallery, New York
18 May 1940 - Internal museum documents Circulating exhibition contract for Picasso: Forty Years of His Art (second edition) between the Museum of Modern Art, New York, and the Carnegie Institute
Report, 2003 - News programme “El tapiz de Guernica oculto con una cortina azul en la ONU” (Covering of the tapestry Version of Guernica at the UN)