Documents dating from the time of President Kennedy's assassination give us something of a sense of how the world reacted to the news as it broke.
Archive police files, eyewitness accounts and newspaper reports mix cold, unforgiving facts with vivid detail.
Some documents struggle to keep the procedural separate from the personal. Others tell the story of the tragedy with a lucidity that still has an impact 50 years on.
This gallery is a selection of material produced both before and after Kennedy's assassination.
Here, a selection of front pages from British newspapers published the morning after the president's death captures a flavour of the sadness and bewilderment felt around the world. Each carries the same Associated Press photo, showing the scene in President Kennedy's car as his wife Jacqueline bends over him just after he was struck by bullets in the neck and head.
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