Historical clue formulations

• Believe — 2022-08-11
• With 19-Across, reconsider ... or a hint to the starts of the five starred clues — 2019-08-08
• See 1-Across — 2018-08-08
• Use one's noodle — 2016-08-03
• "Use your head!" — 2016-02-28
• "Use your head!" — 2014-12-29
• With 61-Across, carefully consider ... or a clue to this puzzle's theme — 2014-04-17
• 1968 hit for 42-Across — 2012-03-21
• Something to do twice? — 2009-12-25
• "Concentrate!" — 2009-08-23
• Get lost in a brown study — 2004-12-19
• "Concentrate!" — 2003-09-05
• Use one's bean — 2000-01-25
• Reflect — 1998-07-24
• Use your brain — 1996-11-11
• Use the bean — 1996-05-12
• Use one's head — 1995-11-17
• Use one's head — 1994-09-24
• "Just _____!" — 1994-08-07