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meen , Office Memorandum .«.UNITED STATES GOVERNMENT | To 1 Director, FBI DATE: Way 17, 1949 st _pwflwom 3 $k0; Bewark —— $ 0 SUBJECT: PROFESSOR srsemQrssmry INTERNAL SECURITY - RB fy) Reference ie made to a letter from the los Angeles office to the Director DT antea apri 13, 1949 advising that ee had advised that ALBERT, FINSTEIN, JB., the son of Pro: or wat presently in the Soviet - Union that Mréy EINSTEIN was afraid that her son in Bus might be held asa hostage to force some particular action on the pert of Professor EINSTEIN. In connection with this information, the records of the clerk of the Federal District Court at Trenton were reviewed for background information soncern- ing Professor EINSTEIN and his family. Waturalizationes at this office reflected --~-- that ALBERT SINSTRIN was teaued Certificate of Arrival No. 3120742 at Hew York, ——— June 3, 1935, He arrived on the 8. S, Queen of Bermda, His Declaration of Intention Wo, 1442 was dated January 15, 1936, At that time he listed his address as 112 Mercer Street, Princeton, New Jersey; his age as 56; and stated that he was Dorn in Vln, Germany on March 14, 1879, The records further reflected that v ——— Frofeseor EINSTEIN was married on April 6, 1917 at Berlin, Germany to FLS* EINSTRIN, who was born in Hechingey, Germany on January 16, 1877. This declaration also reflected that Professor EINSTEIN had two,children at this time; one, ALBERT EINSTEIN who was born May 14, 1905, and EDWARD|EINSTEIN, born June 28, 1910. The declaration further stated that both sons were "born prior to Profeggor BINSTEIN' 2 marriage to ELSA BIFSTEIN, ' & Petition for Naturalization No. 4009 was dated June 2B™ 1940 and in this petition Professor EINSTEIN stated that his son ALBERT NINSTEFY now resided in Greenville, South Carolina. In sddition, the petition for natgralization re- flected that ELSA EINSTEIN had died in approximately 1938. Gort iftonte of Naturalization No, 5013865 was issued October 1, 1940 to Professor BINSTEIN, The witnesses to the naturalization were Dre_GUSTAY_ “_-BUCKY and his vite , who resided at 5 Bast Seventy-sixth Street, ‘Hew York City. The nat: ‘ation records further reflected that MARGOT/ EINSTEIN/ MyPiAM FF TANOFF, wife ras ITRI, born December 3,,1899 at Berlin, was natur: ized at the same time as ‘essor EINSTEIN. rumve poms, born October 17, 1696 at Frieburg, Germany, was also naturalized at tHe same time as Professor EINSTEIN: ’ HELENE DUKAS was listed as a secretary and Mre. MARIANOFY as a sculptor; both pe giving 112 Mercer Street, Princeton, New Jersey as their address and both having the same witnesses to their naturalization. Mrs. MARIANOFF's naturalization indicated that DIMITRI}MARIANOFF was born January 1, 1689 at Weinitra or Venitza. Russia and was married! November 29, 1930 to MARGOT EINSTEIN in Berlin, : = er UL Zogg—|¢ KK 100-32986 eet | SL NDEXED = Mas GeeIPB 12 MAY 18 194g ne Se pow ge Lee a!