1979 front page article on a “Bitter feud” in the CIA regarding Nosenko. The paper, the Philadelphia Bulletin, ceased operations in 1982 and this CIA file, the newspaper story, was not approved for release until 2007.
https://www.cia.gov/library/readingroom/docs/CIA-RDP99-00498R000100180040-1.pdf
Bagley’s, Spy Wars, came out in 2007.
John Hart’s, The Monster Plot, was not released by the US Archives until 2017.
I haven’t yet determined when Richards Heuer’s “Nosenko: Five Paths to Judgement” was released to the public.