In 1983, a Russian émigré, Mark Kuchment, working at Harvard University's Russian Research Center, who had read ''The Rosenberg File'', linked Barr and Sarant to two prominent Soviet scientists, both native speakers of English. | In 1983, a Russian émigré, Mark Kuchment, working at Harvard University's Russian Research Center, who had read ''The Rosenberg File'', linked Barr and Sarant to two prominent Soviet scientists, both native speakers of English. |