17th October 1958.
Image shows HM Queen Elizabeth II and HRH The Duke of Edinburgh, along with the Princess Royal and the Earl and Countess of Harewood, in the Royal Box at the Grand Theatre. They were attending a performance of Handel's opera "Samson", part of the centenary celebrations of the Leeds Triennial Musical Festival, The Earl of Harewood, the Queen's cousin, was Director-General of the Musical Festival at the time.
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