Years of discord : American politics and society, 1961-1974 / John Morton Blum. Blum, John Morton. 1921-2011. E841 .B59 1991 306.20973 20 BLY Includes bibliographical references p. 485-501 and index. New York : W.W. Norton, c1991. c1991. 1991 Text x, 530 p. : eng United States Politics and government 1961-1963. United States Politics and government 1963-1969. United States Politics and government 1969-1974.