The record shows that the agencies organized for the so-called euthanasia of incurables were used for this bloody pogrom. Later, because of the urgent need for laborers in Germany, it was decided not to kill Jews who were able to work but, as an alternative, to sterilize them. With this end in view Himmler instructed Brack to inquire of physicians who were engaged in the Euthanasia Program about the possibility of a method of sterilizing persons without the victim’s knowledge. Brack worked on the assignment, with the result that in March 1941 he forwarded to Himmler his signed report on the results of experiments concerning the sterilization of human beings by means of X-rays. In the report a method was suggested by which sterilization with X-ray could be effected on groups of persons without their being aware of the operation. On 23 June 1942 Brack wrote the following letter to Himmler: “Dear Reichsfuehrer: “* * * Among 10 millions of Jews in Europe, there are, I figure, at least 2-3 millions of men and women who are fit enough to work. Considering the extraordinary difficulties the labor problem presents us with I hold the view that those 2-3 millions should be specially selected and preserved. This can however only be done if at the same time they are rendered incapable to propagate. About a year ago I reported to you that agents of mine have completed the experiments necessary for this purpose. I would like to recall these facts once more. Sterilization, as normally performed on persons with hereditary diseases is here out of the question, because it takes too long and is too expensive. Castration by X-ray however is not only relatively cheap, but can also be performed on many thousands in the shortest time. I think, that at this time it is already irrelevant whether the people in question become aware of having been castrated after some weeks or months, once they feel the effects. “Should you, Reichsfuehrer, decide to choose this way in the interest of the preservation of labor, then Reichsleiter Bouhler would be prepared to place all physicians and other personnel needed for this work at your disposal. Likewise he requested me to inform you that then I would have to order the apparatus so urgently needed with the greatest speed. “Heil Hitler! “Yours “VIKTOR BRACK.” Brack testified from the witness stand that at the time he wrote this letter he had every confidence that Germany would win the war. Brack’s letter was answered by Himmler on 11 August 1942. In the reply Himmler directed that sterilization by means of X-rays be tried in at least one concentration camp in a series of experiments, and that Brack place at his disposal expert physicians to conduct the operation.