Correspondence, diaries, speeches, lectures, writings, notes, research material, family papers, scrapbooks, clippings, and other papers relating chiefly to Ackerman's career as journalist and dean of Columbia University School of Journalism (1931-1956). Other subjects include freedom of the press, World War I, the Philadelphia Public Ledger, and Siberia (1918-1919). Family papers include correspondence and other material of John F. Ackerman, Robert V. Ackerman, and Mabel VanderHoof Ackerman. Correspondents include Nicholas Murray Butler, William R. Castle, Kent Cooper, William Cullen Dennis, George Eastman, Dwight D. Eisenhower, Frank Diehl Fackenthal, Douglas Southall Freeman, James W. Gerard, Edward Mandell House, Roy Wilson Howard, Arthur Krock, David Lawrence, Joseph Pulitzer, Ralph Pulitzer, and Franklin D. Roosevelt.