Conversation so far:
What accident did Dean have?
Dean, unable to stop in time, slammed into the driver's side of the Ford resulting in Dean's car bouncing across the pavement onto the side of the highway.
Was Dean injured in the accident?
Dean was trapped in the car and sustained numerous fatal injuries, including a broken neck.
What happened after his death?
Though initially slow to reach newspapers in the Eastern United States, details of Dean's death rapidly spread via radio and television.
Were people upset?
An estimated 600 mourners were in attendance, while another 2400 fans gathered outside of the building during the procession.

Question: What was the date of his death?
Self-contained rewrite: What was the date of James Dean's death?