Quiggin wrote

The finance minister, Rudolf Hilferding was a leading Marxist theoretician, but in matters of macroeconomic management Marxist orthodoxy coincided with the Treasury view. Hilferding argued that, while crises and depressions would inevitably bring about the downfall of capitalism in due course, in the meantime, there was nothing to do but to follow the dictates of capitalist sound money.

Brad DeLong unfinished paper on "liquidationism."

Wikipedia article on Hilferding

Wikipedia is pretty weak on "liquidationism." In its article on the Great Depression, it has:

The crisis had many political consequences, among which was the abandonment of classic economic liberal approaches, which Roosevelt replaced in the U.S. with Keynesian policies. These policies magnified the role of the federal government in the national economy. Between 1933 and 1939, federal expenditure tripled, and Roosevelt's critics charged that he was turning America into a socialist state.