Hungarian-born nuclear physicist (1908-2003) who worked with Fermi on the Manhattan Project and later assumed a leading role in the development of the hydrogen bomb. TLS, one page, 8.5 x 11, University of California letterhead, April 12, 1962. Letter to Dr. Robert R. Citron, in full: "Thank you for your letter of the 10th and the enclosures, which I have read with interest. I regret that my very hectic schedule these days does not permit me to give you a detailed reply. Your enclosures are returned herewith thanks." In fine condition, with some light creasing.
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