Jean Monnet's contacts with Allen Dulles would have been mainly as a result of Allen's brother John Foster Dulles. In the post war years Allen Dulles held a prominent position in the Council on Foreign Relations in New York. He then became Director of the C.I.A.. The Allen Dulles papers held in the Princeton Library relating to Monnet date from the death of Foster Dulles in 1959 and generally refer to Foster but also touch on other matters such as European unity and US/European co-operation and partnership.

The originals are held in various Archives and Presidential Libraries in the USA