v. 1. The origins of the proletariat and its evolution as a revolutionary class -- v. 2. The working-class movement in the period of transition to imperialism, 1871-1904 -- v. 3. Revolutionary battles of the early 20th century -- v. 4. The Socialist Revolution in Russia and the international working class, 1917-1923 -- v. 5. The builder of socialism and fighter against fascism -- v. 6. The working-class movement in the developed capitalist countries after the Second World War, 1945-1979

1. Labor and laboring classes -- Collected works