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
<em>Ramparts</em>, San Diego, vol. 5, no. 3 (August, 1966): 46–50 - Article “Napalm: Made in USA. A Small-Town Diary”