Richard Hofstadter
His most important works are Social Darwinism in American Thought, 1860–1915 (1944); The American Political Tradition (1948); The Age of Reform (1955); Anti-intellectualism in American Life (1963), and the essays collected in The Paranoid Style in American Politics (1964).  He was awarded the Pulitzer Prize two times: in 1956 and 1964.