Britain's Queen Elizabeth II is pictured in Canberra in this file photograph taken March 22, 2000. The Queen is celebrating her 75th birthday today April 21, 2001, with a low-key affair at home with her husband the Duke of Edinburgh, as London's Hyde Park hosts a 41-gun salute from the King's Troop Royal Horse Artillery and the Tower of London hosts a 62-gun salute in the Queen's honour.

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