Historical clue formulations

• 13-time N.B.A. All-Star Kevin — 2023-06-05
• 10-time N.B.A. All-Star Kevin — 2020-10-27
• Four-time N.B.A. scoring champion in the 2010s — 2016-10-22
• Kevin who was the 2014 N.B.A. M.V.P. — 2015-10-07
• Historian Will or Ariel — 2012-07-24
• Historian Will — 2005-12-22
• "The Story of Civilization" author — 2002-07-12
• "The Story of Civilization" author — 1994-05-09