1919 – Born on March 30th in Boston, Massachusetts.
1950 – Married to Mary Buckminster Lothrop.
1953 – Was the Dean of Arts and Sciences in Harvard University.
1961 – Became the White House National Security Advisor.
1966 – Was the president of Ford Foundation for 13 years.
1967 – Was a member of Alfalfa Club.
– Received the Cosmos Club Award.
1979 – Was a professor of history at New York University.
1980 – The author of several books including Presidential Promises and Performance, Danger and Survival: Choices About the Bomb in the First Fifty Years and Reducing Nuclear Danger: The Road Away from the Brink.
1990 – Was the Chairman of Carnegie Corporation Commission on Reducing Nuclear Danger.
1996 – Died of a heart attack on September 16th in Boston, Massachusetts.