role of Ethel Rosenberg in her husband's espionage ring remains a matter of dispute. In 2008, when a group of academic historians sought the release of the transcripts of the grand jury proceedings that indicted the Rosenbergs, Greenglass objected to the government's release of his testimony. U.S. District Judge Alvin Hellerstein declined to order the release of the testimony of Greenglass and other surviving witnesses who withheld their consent or could not be located. The grand jury testimony was finally released in July 2015. Greenglass never mentioned involvement by his sister in Rosenberg's delivery of atomic secrets to the Soviets. David Greenglass died on July 1, 2014. He was predeceased by his wife, Ruth, who died on April 7, 2008. His death was not publicly announced by his family and was only discovered on October 14, 2014, when The New York Times called the nursing home where he had been living under an assumed name. References Sources Further reading External links has the full text for former KGB agent Alexander Vassiliev's Notebooks containing evidence on Greenglass's cooperation with the Soviet Union Greenglass's grand jury testimony Complete transcript of the Rosenberg trial 1922 births 2014 deaths People from the Lower East Side American people of Russian-Jewish descent American people of Austrian-Jewish descent Admitted Soviet spies World War II spies for the Soviet Union American people convicted of spying for the Soviet Union American people in the Venona papers Haaren High School alumni Cold War spies Julius and Ethel Rosenberg Manhattan Project people Nuclear secrecy People convicted under the Espionage Act of 1917 Polytechnic Institute of New York University alumni People from Laurelton, Queens