Munich, Trogerstrasse 56, 16 April 1942 Highly esteemed Reich Leader:
May I thank you for your letter of 13 April. I am delighted with the great interest which you, highly esteemed Reich Leader, are taking in the experiments and their results. I thank you for the inspiration you have given me in your letter.
The experiment described in the report of 4 April was repeated four times, each time with the same results. When Wagner, the last test person had stopped breathing, I let him come back to life by increasing pressure. Since test person “W . . .” was assigned for a terminal[23] experiment, as a repeated experiment held no prospect of new results, and since I had not been in possession of your letter at that time, I subsequently started another experiment through which Test Person Wagner did not live. Also in this case the results obtained by electrocardiographic registration were extraordinary.
In accordance with your orders, I tried to contact Dr. Fahrenkamp immediately upon receipt of your letter. However, I could not speak to him since he is laid up with angina. In a few days I shall ask again if Dr. Fahrenkamp is available.
Meanwhile, at times together with Dr. Romberg, I have carried out falling experiments from heights of from 16 to 20 kilometers. There, contrary to theoretical assumptions, it was proved that falling through space after jumping from an airplane in the stratosphere (pressure cabinplane) is quite possible, as after severe unconsciousness the test person regained complete consciousness in each case, at between 7 and 8 kilometers height when the parachute lever, installed in the chamber, was pulled.
Within the next few days, I shall report at length on these experiments as well as on the above-mentioned Test Person Wagner.
I also have a request to make: May I take pictures of the various dissection preparations in the dissecting room of the concentration camp to make a record of the strange formations of air embolism? In this connection, my wife has already written to SS Sturmbannfuehrer Dr. Brandt.
Highly esteemed Reich Leader, allow me to close by assuring you that your active interest in these experiments has a tremendous influence on one’s working capacity and initiative.