Mark David Chapman was sentenced to 20 years to life in prison for murdering John Lennon.
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John Lennon's album 'Walls and Bridges' was released in the US.
A John Lennon fan bought a lock of his hair for $35,000 at an auction in Dallas, Texas, USA.
John Lennon had his last professional photoshoot.
John Lennon and Yoko Ono left the UK and headed to New York City, US.
John Lennon's wife, Yoko Ono, was granted permanent residence in the United States.
