Queen Elizabeth II and Prince Philip wave happily to the crowds as they are driven in the State Landau, accompanied by Prince Charles and Princess Anne, from Buckingham Palace to Guildhall to attend the Silver Wedding anniversary luncheon at Guildhall. The luncheon, given by the lord Mayor and Corporation of the City of London, followed a Thanksgiving Service in Westminster Abbey, were the Royal Couple were married on November 20, 1947. Photo taken November 1972. (UPI Photo/British Information Services/Files)