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
ca. 1981 - Newspapers The Guernica Imbroglio. Al international Tug-of-War over Picasso's Protest Painting