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September 7, 1951

Dear Professor Pfeiffer:
There are envelopes—and they are not from many people—that when you see one of them in the mail, you know that it is certainly something pleasant, cordial, magnanimous. I was never mistaken about your envelopes.
We like to hear that your visit in Europe was a success and a relaxation. I have mentioned in a letter to my publisher there (Garzanti) your visit in Rome, and possibly he has written to you.
Since the astronomers expropriated your copy of the Macmillan edition of Worlds in Collision, I shall take the opportunity to mail to you a British edition copy with an appropriate inscription. I trust the astronomers will need the copy in times to come.
Very sincerely,
Immanuel Velikovsky