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.
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Early life
Archibald Coolidge was born in Boston, Massachusetts, as the third of five boys. His parents were Harvard University Law School graduate Joseph Randolph Coolidge and Julia (née Gardner) Coolidge, both from prominent and wealthy Boston Brahmin families. His siblings included U.S. Minister to Nicaragua John Gardner Coolidge, noted lawyer Harold Jefferson Coolidge Sr. (the father of zoologist Harold Jefferson Coolidge Jr.), architect J. Randolph Coolidge Jr. and mathematician and fellow Harvard professor Julian Lowell Coolidge.
His paternal uncle was Thomas Jefferson Coolidge, the Boston businessman and U.S. Minister to France. His father, Joseph Randolph Coolidge, was a great-grandson of the 3rd United States President Thomas Jefferson, through his maternal great-grandparents, Thomas Mann Randolph Jr. and Martha Jefferson Randolph. Archibald's great-uncles were Thomas Jefferson Randolph, George Wythe Randolph, and his grandfather, Joseph Coolidge, was a distant relative of President Calvin Coolidge.




