On 23 June 1942 Brack wrote the following letter to Himmler: Dear Reichsführer, among tens of millions of Jews in Europe, there are, I figure, at least two to three millions of men and women who are fit enough to work.
Pada tanggal 23 Juni 1942 Brack menulis surat berikut buat Himmler: Reichsführer yang terhormat, di antara 10 juta bangsa Yahudi di Eropa, ada satu gambaran setidaknya 2-3 juta pria dan wanita yang cukup layak bekerja.