The records, held by the National Archives and Records Administration, could shed more light on Lee Harvey Oswald's six-day trip to Mexico City, when he met with Cubans and Soviets two months before he shot Kennedy in Dallas on Nov. 22, 1963.
The papers could also reveal more about the careers and activities of Watergate burglars E. Howard Hunt and James McCord, both of whom were longtime CIA operatives.
But experts do not believe the documents will contain information to shake the Warren Commission's conclusion that Oswald acted as the lone gunman in Dealey Plaza.