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December 20, 1957 Mr. Donald W. Douglas, Sr. Douglas Aircraft Company, Inc. Santa Monica, Calif. Dear Doug: I could not wait until Christmas to open the package which you so kindly sent. The result of my precipitation gives me cause for complaint because I got into the Earth and the Universe and thereby have lost a lot of sleep. Thanking you most sincerely and with warmest greeting to Pegg and to you, I remain Sincerely, ERS E. R. Silliman ERS:mem