Hoping that it will be possible for me to see you on the occasion of my next visit to Headquarters, I remain with best regards and Heil Hitler! Yours, [Signed] E. MILCH Reich Leader SS and Chief of the German Police Himmler Berlin SW 11. TRANSLATION OF DOCUMENT NO-289 PROSECUTION EXHIBIT 72 LETTER FROM HIPPKE TO HIMMLER, 8 OCTOBER 1942, THANKING THE LATTER FOR HIS ASSISTANCE IN HIGH-ALTITUDE EXPERIMENTS IN DACHAU Berlin W 8, 8 October 1942 Leipziger Str. 7 Telephone 52 00 24 To the Chief of the German Police, Reich Fuehrer SS Himmler, Berlin SW. 11, Prinz Albrecht Str. 8 Subject: Letter 1309/42 of 25 August 1942 to State Secretary Milch concerning experiments for rescue from high altitudes. Very honored Reich Leader SS, In the name of German research on aviation medical problems, I beg to thank you very obediently for the great help and all the interest shown in the Dachau experiments; these experiments form a complement which is, for us, of great value and importance. The fact that an atmosphere with so little oxygen can be endured at all for some time is most encouraging for further research. It is true that no conclusions as to the practice of parachuting can be drawn for the time being, as a very important factor, namely cold, has so far not yet been taken into consideration; it places an extraordinary excess burden on the entire body and its vital movements, so that the results in actual practice will very likely prove to be far more unfavorable than in the present experiments. In the meantime the supplementary tasks required now have been begun. In part they will have to be finished only after completion of the new Research Institute for Aviation Medicine of the Reich Air Ministry in Tempelhof, whose low-pressure chamber will include all cold generating apparatus and also an installation for producing conditions at a height of 30 kilometers. Freezing experiments in another direction are, in, part, still being made at Dachau. When the work will need once more your sympathetic assistance, may I be allowed to get in touch with you again through Stabsarzt Dr. Rascher? Heil Hitler [Signed] PROF. DR. HIPPKE TRANSLATION OF DOCUMENT NO-224 PROSECUTION EXHIBIT 76 NOTE BY ROMBERG ON SHOWING OF FILM IN OFFICE OF STATE SECRETARY MILCH, AND PROPOSED REPORT TO MILCH, 11 SEPTEMBER 1942