Two members of the United States delegation: Lt.r. I.I. Rabi member of the President's Scienific Advisroy Committee and Hon. Paul Foster Resident Representrative to the IAEA during the fourth regular session of the IAEA General Conference

The Scientific Advisory Committee of the IAEA: (l.t.r.) front row: Dr. I.I. Rabi, Dr. H.J. Bhabha, Prof. W.B. Lewis, Prof. V.S. Emelyanov; back row: Mr. Sterling Cole, Dr. Luiz Cintra de Prado, Dr. Bertrand Goldschmidt, Sir William Penney and Dr. Henry Seligman.