I just finished reading Puppetmaster: The Secret Life of J. Edgar Hoover (2004) by Richard Hack. I hadn't known that Hoover had dated Lela Rogers, Ginger's mother. I hadn't known that he and Dorothy Lamour had an affair, which she didn't deny. I knew, of course, that Hoover and his COINTELPRO organization had spread false rumors that Jean Seberg was pregnant with the baby of a Black Panther Party member. I hadn't realized how much Franklin Roosevelt utilized Hoover's domestic surveillance. I hadn't realized that Harry Truman distrusted Hoover and compared his methods to Gestapo tactics. So I learned a few things. Which is one of the reasons that reading good for you.