Madrid, 6 December 1968 - Institutional correspondence Luis Carrero Blanco's letter to Florentino Pérez Embid
Chicago, 21 February 1955 - Management of reproduction rights Marilyn Vaughan's letter 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