SS Senior Col. (SS Oberfuehrer) Brack Field Headquarters
Berlin W 8 Voss-Strasse 4
Top Secret
4 copies
4th copy
Dear Brack:
It is only today that I have the opportunity of acknowledging the receipt of your letter of 23 June. I am positively interested in seeing that sterilization by X-rays is tried out at least once in one camp in a series of experiments.
I will be very much obliged to Reichsleiter Bouhler if, to begin with, he would place the expert physicians for the series of experiments at our disposal.
I will mail a copy of this letter to the Reich Physician SS and to the competent Chief of the Main Office for concentration camps.
Heil Hitler!