That indicates it's probably a pretty darn substantial and important work.
The book “The Devil’s Chessboard: Allen Dulles and The Rise of America’s Secret Government” tells the reader EXACTLY who killed JFK. Very informative book about the Cold War and the out of control US spy apparatus.
Oswald did it. Maybe he was played and used by others, but I don’t buy the idea that Kennedy was some great threat to the Deep State — or that GHW Bush had the will, brains, or commanding presence to pull off a conspiracy.