Speeches and writings, correspondence, reports, clippings, other printed matter, photographs, motion picture film, and sound recordings, relating to conditions in and American relations with Latin America and Spain, American foreign policy and domestic politics, and the Republican Party. Hill was an American diplomat; ambassador to Mexico, 1957-1961; Spain, 1969-1972; and Argentina, 1974-1977; assistant secretary of state, 1956-1957; assistant secretary of defense, 1973-1974.