Madrid, 6 December 1968 - Institutional correspondence Luis Carrero Blanco's letter to Florentino Pérez Embid
Flushing, New York, 23 May 1939 - Institutional correspondence Simon Guggenheim's and Dana C. Backus's form letter to ask for donations
Madrid, 2006 - Photograph Exhibition Pablo Picasso, Guernica, historia de un cuadro, en los jardines de la Casa de América