25 September and 11 October 1972 - Personal correspondence A letter from Catherine Freedberg to Roland Penrose, including the reply
<em>New Left Review</em>, London, vol. 27 (May–June 2004): 5–21 - Article “Afflicted Powers: The State, the Spectacle and September 11”
Cambridge, Massachusetts, 14 May 1973 - Institutional correspondence Catherine Freedberg's letter to Patricia Failing