New York, 7 March 1956 - Institutional correspondence A telegram from Edgar Craig Schenk to Pablo Picasso
<em>Ramparts</em>, San Diego, vol. 5, no. 7 (January 1967): 44–68 - Article “The Children of Vietnam”
September, 1981 - Management of reproduction rights Memorandum of understanding between the Museum of Modern Art, New York, and Undersigned