Royal Silver Wedding -- King George VI and Queen Elizabeth, riding in the 1902 State Landau, drawn by six Windsor greys with two outriders, arrive at Ludgate Circus, from Fleet Street, enroute to attend their Silver Wedding thanksgiving service at St. Paul's London, April 26. Princess Elizabeth and the Duke of Edinburgh follow them in a semi-state Landau drawn by four bays. Both coaches are accompanied by household Cavalry. Princess Margaret sits opposite King and Queen in the their coach. May 11, 1948. (Photo by Associated Press Photo).