Karl Korsch on problems with the workers' councils in the German revolution, written in 1921.
Paul Mattick on the socialist politics of Karl Korsch.
Korsch's 1931 essay discusses Marxism's crisis as an imbalance between its "theoretical expression" and "the practical needs of the proletarian class struggle" - and seeks to account for it in the historical development of Marxism from an evolving "radical critique" into an ideological "scientific system".
Paul Piccone on libertarian marxist Karl Korsch in Spain. In PDF format.
Apparently freely available online for the first time here, this 1930s book is far less well known than its subject matter. With an admirable clarity of style, Jakubowski provides a summary of the main themes of Lukacs' History and Class Consciousness and Korschs' Marxism and Philosophy (Korsch was a personal friend of Jakubowski.)
A look at the life of Marxist theoretician Karl Korsch, and the relevance of his theoretical work to anarchism.
Karl Korsch on the working class and World War II in 1941.