Description: Dag Hjalmar Agne Carl Hammarskjöld (29 July 1905 – 18 September 1961) was a Swedish diplomat and author and was the second Secretary-General of the United Nations. He served from April 1953 until his death in a plane crash in September 1961. He is the only person to have been awarded the Nobel Peace Prize posthumously. Hammarskjöld remains the only U.N. Secretary-General to die in office.
U.S. President John F. Kennedy called Hammarskjöld “the greatest statesman of our century.”