In 2009 Broda was accused of espionage in a book based upon the journalist Alexander Vassiliev's access to formerly undisclosed KGB archives.
In the late 1990s, Weinstein conducted research into Soviet intelligence files with former KGB operative Alexander Vassiliev.
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Allen Weinstein and Alexander Vassiliev, The Haunted Wood: Soviet Espionage in America—the Stalin Era, (New York: Random House, 1999) ISBN 0-679-45724-0 - See Vassiliev Notebook "Black Notebook", Page 75.
A 2009 book by John Earl Haynes, Harvey Klehr and Alexander Vassiliev, Spies: The Rise and Fall of the KGB in America, outs Podolsky as a spy.
According to Alexander Vassiliev's notes from KGB archive "Quantum" was Boris Podolsky, "Pers" — Russell W. McNutt, an engineer from the uranium processing plant in Oak Ridge.
Allen Weinstein and Alexander Vassiliev, The Haunted Wood: Soviet Espionage in America—the Stalin Era, New York: Random House, 1999, pgs.
Allen Weinstein and Alexander Vassiliev, The Haunted Wood: Soviet Espionage in America—the Stalin Era (New York: Random House, 1999).