It is there on his Wikipedia page: > In 1956, Bulger served his first term in federal prison at Atlanta Penitentiary for armed robbery and truck hijacking. He

It is there on his Wikipedia page: > In 1956, Bulger served his first term in federal prison at Atlanta Penitentiary for armed robbery and truck hijacking. He later told mobster Kevin Weeks that while there, he was used as a human subject in the CIA-sponsored MK-ULTRA program. https://en.wikipedia.org/wiki/Whitey_Bulger#Prison https://en.wikipedia.org/wiki/Whitey_Bulger#Prison