Ambassador to Gabon (1961-1965); also accredited to the Central African Republic, Chad, and Congo (Brazzaville).
Oral History Interview (1971): Darlington completed one interview for the John F. Kennedy Library on 12/3/1971, where he comments upon his role as an ambassador, meetings with President Kennedy, the African Bureau of the State Department, American Foreign Aid, and Foreign Service under the Kennedy Administration, among other issues.