I also worked with Fermi on particles occurring in cosmic rays, origin of cosmic rays, of very particular kinds of cosmic rays that we discussed. All of this was a part of the main work at that time and I want to tell you one personal experience. I had a nice paper published with Fermi and I remember how it came about. We discussed the substance of it and came to an agreement, but then it had to be written, and it was written actually in a way in which perhaps few if any other papers were ever written. We had a very nice secretary who made me acquainted with travel plans to put in my pocket if I wished to be led when I was away from home, Mrs Macmillan. Fermi hardly ever used a secretary. When we had to use- write the paper, Fermi didn't write it, I didn't write, Mrs Macmillan wrote it. We brought her in and alternate parts were dictated to her by Fermi and by me. Needless to say what I talked was an American modality of Hungarian and what Fermi was talking was practically Italian but Mrs Macmillan managed to put down, all down in English, so that it was publishable.