Mexico City, 26 September 1968 - Institutional correspondence A letter from Rachmael ben Avram to Nelson Rockefeller
Mexico City, 26 September 1968 - Institutional correspondence Rachmael ben Avram's letter to Carol K. Uht
6 and 13 August 1952 - Press release and communication Press dossier on various exhibitions held at the Museum of Modern Art, New York