The Socialism Collection brings together nine major works from the socialist, communist, and radical political traditions.

Book 1: Manifesto of the Communist Party by Karl Marx and Friedrich Engels is the famous call for class struggle and revolutionary transformation.

Book 2: Wage-Labor and Capital by Marx explains labor, wages, capital, and the relationship between workers and owners.

Book 3: Socialism: Utopian and Scientific by Engels contrasts earlier ideal socialist schemes with what he presents as a scientific understanding of history and class society.

Book 4: Engels' Speech at the Grave of Karl Marx pays tribute to Marx's intellectual and political legacy.

Book 5: Reform or Revolution by Rosa Luxemburg argues against replacing revolutionary socialism with gradual reform alone.

Book 6: State and Revolution by Vladimir Lenin examines the state, class power, revolution, and the dictatorship of the proletariat.

Book 7: What Is to Be Done by Lenin addresses organization, party discipline, political consciousness, and revolutionary strategy.

Book 8: Imperialism: The Final Stage of Capitalism analyzes empire, monopoly, finance capital, and global conflict.

Book 9: The Emma Goldman Collection adds anarchist and feminist radicalism to the collection's broader political range.

Together these works present some of the most influential and controversial arguments in modern political history.