JFK murder 'transcript' unveiled
Officials in Dallas, Texas, have unveiled the purported transcript of a conversation between US President John F Kennedy's assassin and another man.
The transcript records an alleged conversation between assassin Lee Harvey Oswald and Jack Ruby, who killed Oswald before he could face trial.
The two men discuss a plot to kill the president a month before his 22 November 1963 murder in Dallas.
A Dallas official said he did not know whether the transcript was genuine.
One theory is that the transcript is a fake - part of a movie script that Mr Wade was working on.
In the transcript, Oswald and Ruby discuss a way to "get rid of" US Attorney General Robert Kennedy - JFK's brother - by killing the president.
Robert Kennedy was launching a crackdown on the mafia in the US at the time.
An investigation into the Kennedy assassination concluded that Oswald probably acted alone.