Primarily newspaper clippings of Mabley's columns written over his career at the Chicago Daily News, Chicago Today, the Chicago's American, and the Daily Herald. The subject files include Mabley's earliest journalistic efforts from the Daily Illini where he contributed to the exposure of gambling and prostitution around the University of Illinois. Also of interest are subject files that Mabley kept on the 1968 Democratic Convention, the Richard Cain case, racketeering, police corruption, and vice in Chicago. These files contain clippings, research materials and often correspondence offering anonymous, inside information into situations Mabley was investigating. The Richard Cain file contains several detailed letters written to Mabley from Cain in jail. The 1968 Democratic Convention folders contain memos from a reporter who infiltrated both the SDS and the National Mobilizing Committee in the months leading up to the convention. There are also sports and Television columns from Mabley's early career, speeches, and other miscellaneous articles.