Hermann Wilhelm Haupt (1831 – 29 July 1886) was born in Germany in. He was a business clerk and became a member of the Communist League. However, he betrayed the other defendants during the Cologne Communist Trial and was subsequently released by the police during the official investigation.Biographical note contained in the Collected Works of Karl Marx and Frederick Engels: Volume 10 (International Publishers: New York, 1978) p. 722.
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