He served as acting president of the American Historical Association in 1924 after the death of Woodrow Wilson, and then president in his own right in 1925. He held various memberships including the American Philosophical Society, the Royal Historical Society, the American Academy of Arts and Letters, and Phi Beta Kappa. He was elected a member of the American Antiquarian Society in 1907,American Antiquarian Society Members Directory and elected a fellow of the American Academy of Arts and Sciences in 1918.
