New York, 6 May 1955 - Institutional correspondence A letter from W.R. Keating & Company International to R. Lerondelle
1955 - Internal institutional documents A list of works for the Picasso exhibition, which will travel from Paris to Munich
1955 - Insurance documents Transport and insurance, provided by Morel d'Arleux, general secretary of the Union Centrale des Arts Décoratifs
Madrid, 29 May and 10 June 1981 - Institutional correspondence A letter from Felipe Cons Gorostola to Álvaro Martínez Novillo, and reply