Our local library was having a book sale and in the 50 cent pile I found a 2001 copyrighted book by Joseph E. Persico entitled "Roosevelt's Secret War - FDR and WWII Espionage". I figured for 50 cents I couldn't go wrong. I started reading it and couldn't put it down. Excellent book. A lot of things I never knew about the OSS and people around FDR during WWII. I never realized what a detrimental influence J. Edgar Hoover had been on the US war effort -- making up lies to prevent the formation of the OSS, ignoring critical intelligence, more worried about his own personal status than doing his job, taking credit for other people's work, etc. A lot of information on spies and spying which was going on during WWII on the Manhattan Project.
If your interested in WWII history, I'd recommend this book.
If your interested in WWII history, I'd recommend this book.