Mougins, 14 November 1970 - Institutional correspondence Pablo Picasso's letter to the New York's Museum of Modern Art
New York, March 11, 1970 - Petition A petition from the Art Workers' Coalition to remove Guernica from the galleries of the museum
Mougins, 23 February 1970 - Personal correspondence A donation document for early works conserved by Picasso’s family and signed by the artist