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
New York, November 10, 1967 - Petition A Call for the Immediate Resignation of all the Rockefellers from the Museum of Modern Art’s Board of Trustees