Paris, 5 May 1955 - Institutional correspondence A letter from the general secretary of Les Arts Décoratifs to the insurance company L'Union
Paris, 15 November 1955 - Institutional correspondence A letter from the general secretary of the Musée des Arts Décoratifs to the Société de la Propriété Artistique et des Dessins et Modèles (S.P.A.D.E.M.)
Paris, 17 October 1955 - Internal museum documents A note from the general secretary of the Union Centrale des Arts Décoratifs
Paris, 3 August 1956 - Institutional correspondence A letter from the general secretary of Les Arts Décoratifs to the Haus der Kuns, Munich
Madrid, 22 April 1976 - Internal institutional documents A report by Joaquín de la Puente on the ownership of Guernica and the negotiation possibilities with the Museum of Modern Art, New York
Madrid, 10 September 1981 - Internal museum documents Certificate for the reception of Guernica, and its stretcher and related works