[ Autographs ] (FATHERS OF THE RUSSIAN ATOMIC BOMB) A fine grouping of signatures of fathers of the Russian atomic bomb on a certification that a vote had been taken by the Council of Questions of Physics of the Academy of Science, 1p. 4to., [n.p.], May 17, 1952. Among those signing are LANDAU, KONDRATIEV, ALEXANDROV, PESHKOV, ALEXIEVSKY, DANILOV, MALKOV, STEPANOV, STRELKOV and SHALNIKOV. File holes at left, else very good. A rare grouping of important scientists!