Coolidge, Archibald Cary (1866–1928)

US historian. He taught history at Harvard from 1893. He wrote The United States as a World Power (1908) and was editor-in-chief of Foreign Affairs 1922–27.

He was born in Boston, Massachusetts. As director of the Harvard Library 1910–22, he oversaw the establishment of the Widener Library 1913–15. He was the chief of mission in Paris and Vienna in 1919 and the Red Cross negotiator with the Soviet Union in 1921.