US President John F. Kennedy and First Lady Jacqueline Kennedy greet spectators after arriving at Love Field in Dallas on November 22, 1963.

The presidential motorcade drives through the streets of Dallas on November 22, 1963, carrying US President John F. Kennedy, First Lady Jacqueline Kennedy, Texas Governor John Connally, and Connally's wife Nellie.

Jackie Kennedy looks adoringly at President John F Kennedy during address at Democratic conference, Dallas; 1960s

Jackie Kennedy carrying bouquet has her coat brushed down by woman and shakes hands with people before getting into car, Vienna; 1961

President John F. Kennedy steps off plane with First Lady Jackie and daughter Catherine Kennedy, USA

TIlt up from John F. Jr. and Caroline to Jacqueline Kennedy as they await coffin of President John F. Kennedy Sr. during state funeral ceremony, Washington D.C.; 25 November 1963

Empress Farah, wife of Shah Mohammed Reza Pahlavi of Iran shakes hands with President John F Kennedy, pan left to Jackie Kennedy, White House; 28 Jun 62

US President John F. Kennedy, First Lady Jacqueline Kennedy, Vice President Lyndon Johnson and Mrs. Lady Bird Johnson attend the burial of former First Lady Eleanor Roosevelt in Hyde Park, NY.