Historical clue formulations

• Author of the best seller "Boss: Richard J. Daley of Chicago" — 2010-06-18
• 1972 Pulitzer winner for Commentary — 2010-02-05
• Chicago journalist Mike — 2008-10-12
• Columnist Mike — 2006-04-23
• Columnist Mike — 2005-11-29
• Pulitzer-winning columnist Mike — 1996-11-28