Photograph of Princess Margaret seated, her head turned a little to her right, she looks upwards, smiling. She wears short-sleeved dress and necklace and holds a card/piece of paper in her left hand. Writing in The Listener in 1939, the photographer Marcus Adams explained that it is a child’s ever-changing expression that he strove to capture: ‘To realise these subtle and fleeting expressions one must be fit and in tune – your mind must be as sensitive as a photographic plate, and your actions as quick as a swallow.’