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57 Francis Avenue
Cambridge 38, Massachusetts


Jan. 27, 1951

Dear Dr. Velikovsky:

In the rush of flying to Zurich next week to give a course of lectures at the University of Rome I have neglected my correspondence. Please excuse my delay in thanking for your letter of Dec. 6 and for letting me see the enclosed rebuttal.

Best wishes for your new book.

Yours faithfully,

Robert H. Pfeiffer

I was gald to see you in New York.