The papers of Charles Francis Adams II (1835-1933) consist of diaries (1861-1915), personal journals, and literary drafts, and delineate his long life and diverse interests. Subjects are: Adams' service in the Civil War, his work with the Massachusetts Railroad Commission, his presidency of the Union Pacific Railroad, his historical writings and long association with the Massachusetts Historical Society, and his efforts in behalf of educational reform and anti-imperialism in the Philippines as a member of the Harvard University Board of Overseers and the Anti-Imperialist League.