Correspondence, memoranda, speeches, reports, subject and chronological files, clippings, printed matter, photographs, and other papers relating principally to Green's career and activities in the U.S. Senate, particularly as a member and chairman of the Senate Committee on Foreign Relations. Subjects include Rhode Island state politics, Democratic Party politics, domestic issues, foreign affairs, the United Nations, North Atlantic Treaty Organization, and fisheries treaties. Other subjects include agriculture, appropriations, communism, loyalty and security questions, state and federal patronage, veterans, silver legislation, the U.S. Army, U.S. Atomic Energy Commission, United States Commission on Civil Rights, U.S. Dept. of State, Democratic Party, and the Democratic National Committee. Also includes files relating to Joseph R. McCarthy and to presidents Franklin D. Roosevelt, Harry S. Truman, and Dwight D. Eisenhower.