25 September and 11 October 1972 - Personal correspondence A letter from Catherine Freedberg to Roland Penrose, including the reply
Madrid, 10 September 1981 - Photograph The boxes protecting Guernica are taken out of the lorries and taken into the Casón del Buen Retiro
Cambridge, Massachusetts, 14 May 1973 - Institutional correspondence Catherine Freedberg's letter to Patricia Failing