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Das Geld by Karl Helfferich
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Helfferich is not undisputed. From Wikipedia:
Karl Theodor Helfferich (22 July 1872 – 23 April 1924)...became a leader in the German government's policy of economic imperialism... and in 1908 he was made director of the powerful Deutsche Bank in Berlin.Das Geld by Karl Helfferich
Helfferich was a prominent politician of the German National People's Party (DNVP) and gave radical anti-republican speeches against politicians who supported reparations fulfilment. In June 1920 he was selected as spokesman in the Reichstag for the parliamentary committee of inquiry into policies during the war, which he defended.
During the 1923 hyperinflation, Helfferich developed a plan for a new rye currency, indexed to the price (in Marks) of rye and other agriculture products. His plan was rejected because of the extreme variability in the price of rye compared to other commodities, but many of his plan elements were incorporated in the successful RentenMark that began circulation on 15 November 1923. At the end of 1923, when Helfferich applied for the post of Reichbank president, he was rejected in favor of Hjalmar Schacht.
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