Madrid, 13 June 1981 - Institutional correspondence A letter from Álvaro González de Mesa to Javier Tusell
Cambridge (Massachusetts), 23 December 1976 - Institutional correspondence A letter from Josep Lluís Sert to Herschel B. Chipp
Paris, 31 May 1937 - Internal institutional documents Summary of figures submitted as payment for propaganda
Paris, 31 May 1937 - Internal institutional documents Figures submitted by the Special Acquisitions Service for Propaganda