Forty seconds of film shot moments before US President John F Kennedy's assassination has been released by a museum in Dallas.
The silent 8mm footage, shot by amateur photographer George Jefferies, shows a close up of Jacqueline Kennedy in vivid colour waving to the crowd.
It also reveals the president's overcoat bunching up while riding in the motorcade. Conspiracy theorists often point out that the bullet wounds in his body and coat do not match.
The film was donated by Mr Jefferies and his son-in-law Wayne Graham to the Sixth Floor Museum in Dallas.
Curator Gary Mack says this film offers the best view of Mrs Kennedy in the motorcade he has ever seen. It was taken 90 seconds before the shots were fired.
President Kennedy's assassination in 1963 inspired a long list of conspiracy theories - and the Hollywood movie JFK - which speculate he was killed by his own government, the 'military-industrial complex', the Mafia or communist Cuba.
The Sixth Floor Museum made the footage available on its website.
