Paris, 14 October 1955 - Institutional correspondence A letter from the Société de la Propriété Artistique et des Dessins et Modèles (S.P.A.D.E.M.) to the Musée des Arts Décoratifs
New York, 8 May 1968 - Institutional correspondence Antonio Serrano's letter to Fernando María Castiella
ca. 1952–1956 - Internal museum documents Publicity report for the exhibition Studies for Guernica by Normal University, Illinois, addressed to the Travelling Exhibitions Department at the Museum of Modern Art, New York