Sao Paulo, 25 March 1985 and Madrid, 2 April 1985 - Institutional correspondence The loan of Guernica denied for Brazil exhibition
Madrid, 22 September 1936 - Institutional correspondence Francisco Sánchez Cantón's telegram to Pablo Picasso
29 April 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 Cincinnati Art Museum