Madrid, 1 September 1977 - Institutional correspondence A letter from Jesús Madalena to José Mario Armero
Paris, 5 January 1953 - Institutional correspondence Letter from the Assemblé National of France to Pablo Picasso
<em>The New York Times</em>, New York, June 13, 1971, 1 - Article “Vietnam Archive: Pentagon Study Traces 3 Decades of Growing U.S. Involvement”