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57 Francis Avenue
Cambridge 38, Massachusetts


October 13, 1951

Dear Dr. Velikovsky:

With some delay (for which I apologize) but with deep gratitude I come to thank you most heartily for the generous gift of the British Edition copy of your famous book, Worlds in Collision—after the Harvard astronomers took away my American copy. Your dedication is deeply appreciated even though I do not deserve it. You have always been extremely generous and kind with me, and I appreciate it immensely. Please accept my Italian book as a minor token of my gratitude.

With every good wish,

Yours faithfully,

Robert H. Pfeiffer