The Venona Papers, a little known project for the NSA contains a lot of info. The media helps drive the message, and then like now, they're not interested in that message.
http:// www.global-directions.com/Articles/Global%20Politics/IntelligenceInTheColdWar.pdf
Walter Lippman, "most influential" journalist of the 20th century, to "Father of Modern Journalism"
One translation, NY no. 1507, October 1944, footnoted
covername BUMBLE-BEE (Russian ShMELí) as equating to David Greenglass; however, the translation shows a handwritten
emendation of "David Greenglass" to "Walter Lippman", which is the correct equation.
https:// www.nsa.gov/about/cryptologic-heritage/historical-figures-publications/publications/coldwar/assets/files/venona_story.pdf