Mr. Roosevelt served three terms in Congress, from 1949 to 1955. He won his first term by defeating a Tammany Hall-backed Democrat for the 20th Congressional District seat on the Upper West Side of Manhattan. He later served in two Presidential administrations - as Under Secretary of Commerce under President John F. Kennedy in 1963 and as the first chairman of the Equal Opportunity Commission, under President Lyndon B. Johnson, in 1965. He was the fourth of six children born to Franklin Delano and Anna Eleanor Roosevelt. Mr. Roosevelt resigned from the Johnson Administration in 1966 to pursue, for a second time, the governorship of New York State. He graduated from the Groton School in Massachusetts in 1933, and from Harvard in 1937. He graduated from the University of Virginia Law School in 1940 and practiced law briefly in New York. In 1938, he entered the Naval Reserve and was called to active duty as an ensign in March 1941. By the time Mr. Roosevelt was discharged, he commanded a destroyer, the Ulvert M. Moore. Mr. Roosevelt joined the law firm of Poletti, Diamond, Rabin, Freidin & McKay after the war, but his main interest was politics. He worked for the American Veterans Committee and was elected vice chairman of Americans for Democratic Action when it was founded in 1948. In 1958, he moved from New York to Washington and became a principal importer of Fiat and Jaguar automobiles in the United States. He sold his distributorship, the Roosevelt Automobile Company, in 1970. At the time of his death, he was chairman of the Mickelberry Corporation, a holding company, and of the Park Avenue Bank, among other business affiliations. Mr. Roosevelt is survived by his fourth wife, the former Linda Stevenson Weicker; three sons, Franklin D. 3d, Christopher and John; two daughters, Nancy Suzanne Ireland and Laura Roosevelt; a stepdaughter, Linda Davidson Weicker, and eight grandchildren.