Paris, 17 November 1959 - Institutional correspondence A letter from the Groupe d'étudiants d'espagnol to Pablo Picasso
27 March 1940 - Internal museum documents Circulating exhibition contract for Picasso: Forty Years of His Art, between the Museum of Modern Art, New York, and the Institute of Modern Art, Boston
<em>Frieze</em>, London, no. 104 (January–February 2007), January 1, 2007 - Article “2nd Seville Biennial”