When Yates McDaniel died in Florida in 1983, few outside his family paid much attention. The only hint of his fame came in a brief obituary buried on the inside pages of the New York Times. The obit suggested bravery and a past far more exciting than almost anyone knew. Even those who worked alongside him in the 1960s at the Associated Press were startled to learn what McDaniel had been, what he had done when he was a young man and the world was at...