Americans mark 150 years since the Civil War
One hundred and fifty years ago, the first shots were fired in the battle of Fort Sumter, marking the start of the American Civil War.
Frank Williams, a retired chief justice of Rhode Island, told the BBC's World News America about his fascination with Abraham Lincoln - who was US president throughout the Civil War - and walked through the Lincoln collection he's built up since his childhood.
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12 Apr 2011