Archibald Cary Coolidge

Archibald Cary Coolidge
Coolidge c. 1890
Born(1866-03-06)March 6, 1866
DiedJanuary 14, 1928(1928-01-14) (aged 61)
Boston, Massachusetts, U.S.
Alma materHarvard University
University of Berlin
École des Sciences Politiques
University of Freiburg
OccupationLibrarian
RelativesJohn G. Coolidge (brother)
Harold J. Coolidge (brother)
J. Randolph Coolidge Jr. (brother)
Julian L. Coolidge (brother)

Archibald Cary Coolidge (March 6, 1866 – January 14, 1928) was an American educator and diplomat. He was a professor of history at Harvard College from 1908 and the first director of the Harvard University Library from 1910 until his death. Coolidge was also a scholar in international affairs, a planner of the Widener Library, a member of the United States Foreign Service, and editor-in-chief of the policy journal Foreign Affairs.