Kings and rulers

President Harry S. Truman (center), Mrs. Bess Truman (foreground, second from left) and Margaret Truman (foreground, left) greet Princess Elizabeth of the United Kingdom (foreground, second from right) and her husband, Prince Philip, the Duke of Edinburgh (foreground, right), upon their arrival at Washington National Airport. In the background on the far left are Secretary of the Treasury John Snyder and Mrs. Evlyn Snyder. All others are unidentified.

Princess Margaret, Countess of Snowdon and younger sister of Queen Elizabeth II, (foreground, second from left) with Lee A. DuBridge, President of the California Institute of Technology, (foreground, second from right) during a visit to Caltech. Also present is Antony Armstrong-Jones, the Earl of Snowdon and husband of Princess Margaret (foreground, left). All other individuals are unidentified.

Princess Margaret, Countess of Snowdon and younger sister of Queen Elizabeth II, (center, with sunglasses) with Lee A. DuBridge, President of the California Institute of Technology, (right) during a visit to the Caltech. All others are unidentified.

Princess Margaret, Countess of Snowdon and younger sister of Queen Elizabeth II, (foreground, left) with Lee A. DuBridge, President of the California Institute of Technology, (foreground, right) during a visit to the Caltech. All others are unidentified.

President Harry S. Truman (left) at his desk in the Oval Office with Crown Prince Olav of Norway (right).

President Harry S. Truman (left) at his desk in the Oval Office with Crown Prince Olav of Norway (right).

President Harry S. Truman (left) at his desk in the Oval Office with Crown Prince Olav of Norway (right). Also present is Wilhelm Morgenstierne, the Ambassador of Norway (center).

The Shah of Iran (at the front of the group, right) paying respects at the Tomb of the Unknown Soldier. All others are unidentified.

President Harry S. Truman (left) with the Shah of Iran (right) in the Oval Office.

The Shah of Iran (fifth from right) with unidentified officials at George Washington's home, Mount Vernon, Virginia.