Gas Detectors at Auschwitz

In 1993, the French Auschwitz historian Jean-Claude Pressac published a document in his book Les Crématoires d'Auschwitz: La Machinerie du Meurtre de Masse (CNRS éditions, Paris, 1993, p. 72 and document 28), which he presented as ultimate proof that hydrogen cyanide was indeed used in the crematoria morgues at Auschwitz-Birkenau – for homicidal purposes, as he claimed. The discovery of this document has led to a number of revisionist responses, which we have bundled up in this series.