RealClear Books on Arendt's Karl Marx and the Tradition of Political Thought
It fills in two lacunae in Arendt's work: the intellectual labor connecting The Origins of Totalitarianism (1951) with later books such as The Human Condition (1958), and the development of Arendt's thought across the 1950s through a series of fragmented engagements with the writings of Marx and through polemics with American and German peers.
Makes sense. On my preliminary reading of the The Human Condition
, it seems to be mainly a response to Marx's Labor Theory of Value and 20th century Marxist peers. More than it is Arendt's response to Heidegger. Maybe I need to read GA 19