This was a 39-page brochure produced for the internal purposes of the Nazi euthanasia programme (Aktion T4), and contained monthly statistics of the gassing of mentally and physically handicapped patients (called "disinfection" in the document) carried out in the six euthanasia institutions on the territory of the Reich.[1] In 1968 and 1970 an ex-employee of the establishment revealed, as a witness, that he had to compile the material at the end of 1942.[2] The Hartheim statistics included a page on which it was calculated that "disinfecting 70,273 people with a life expectation of 10 years" had saved food in the value of 141,775,573.80 Reichsmarks.[3]