Karl Marx & Friedrich Engels

• Wage, Labour, and Capital
• Grundrisse
• A Contribution to the Critique of Political Economy
• Wages, Price and Profit
• Synopsis of Capital
• Capital. Vol I
• Capital. Vol II
• Capital. Vol III
• Capital. Volume IV / Theories of Surplus Value

• Principles of Communism
• Manifesto of the Communist Party
• Apropos Of Working-Class Political Action
• Fictitious Splits in the International
• Critique of the Gotha Programme
• A Critique of the Draft Social-Democratic Program

• The Condition of the Working Class in England
• The Bourgeoisie and the Counter-Revolution
• The Class Struggles in France
• The Peasant War in Germany
• Revolution and Counter-Revolution in Germany
• The Eighteenth Brumaire of Louis Bonaparte
• The Story of the Life of Lord Palmerston
• British Rule in India
• The Future Results of British Rule in India
• The American Civil War
• The Civil War in France
• The Housing Question
• The Program of the Blanquist Fugitives from the Paris Commune
• On Social Relations in Russia
• The Future Italian Revolution and the Socialist Party
• The Peasant Question in France and Germany

• On the Question of Free Trade
• Two addresses of the Central Committee to the Communist League
• Speech at the Anniversary of the People's Paper
• Inaugural Address of the International Working Men’s Association
• General Rules of the International Working Men’s Association
• Address of the International Working Men's Association to Abraham Lincoln, President of the United States of America
• Instructions for the Delegates of the Provisional General Council, the Different Questions
• Address to the National Labor Union of the United States
• The General Council of the International Working Men’s Association To Committee Members of the Russian Section in Geneva
• Confidential Communication on Bakunin
• Resolutions of the Meeting held to celebrate the Anniversary of the Paris Commune

• Karl Marx. by Frederick Engels
• Frederick Engels’ Speech at the Grave of Karl Marx
• Marx and the _Neue Rheinische Zeitung_. By Frederick Engels
• On The History of the Communist League

From volume I.

• Marx to Pavel Annenkov, 1846
• Marx to J. Weydemeyer in New York, 1852
• Marx to Engels in Manchester, 1856
• Marx to Engels in Ryde, 1857

From volume II.

• Marx to L. Kugelmann, 1865
• Marx to L. Kugelmann, 1866
• Marx to L. Kugelmann, 1868
• Marx to L. Kugelmann, 1871 (A)
• Marx to L. Kugelmann, 1871 (B)
• Marx to F. Bolte, 1871
• Engels to T. Cuno, 1872
• Engels to A. Bebel, 1873
• Engels to F. A. Sorge, 1874

From volume III.

• Marx to W. Bracke In Brunswick, 1875
• Engels to August Bebel In Zwickau 1875
• Engels to P. L. Lavrov, 1875
• Marx to W. Bios, 1877
• Marx and Engels to August Bebel, Wilhelm Liebknecht, Wilhelm Bracke and others, 1879
• Engels to K. Kautsky, 1882
• Engels to Florence Kelley-Wischnewetzky, 1886
• Engels to C. Schmidt, 1890
• Engels to Otto von Boenigk, 1890
• Engels to J. Bloch, 1890
• Engels to C. Schmidt, 1890
• Engels to Karl Kautsky, 1891
• Engels to F. Mchring, 1893
• Engels to N. F. Danielson, 1893
• Engels to W. Borgius, 1894
• Engels to W. Sombart, 1895