A crown jewel of New Left historiography, this nuanced overview of American Marxism is neither an attack on Marxism nor a defense of it as the authentic expression of the working class. According to the Times Higher Education Supplement, Buhle wrote "as good a book, with stunning command of detail and hard-headed generosity, as anyone in his generation about the life of radicalism in America." With today's resurgent interest in radicalism, this new edition provides an unparalleled guide to 150 years of American left history.