New York, 9 September 1981 - Institutional correspondence An internal letter from Richard E. Oldenburg to staff at the Museum of Modern Art, New York
New York, 24 March 1980 - Institutional correspondence A letter from Richard Oldenburg and William Rubin to Javier Tusell
Los Angeles, 3 March 2003 - Photograph A replica of Guernica with the UN logo projected at the intersection of Hollywood and Sunset Boulevard