Historical clue formulations

• Looks all over — 2026-05-09
• Cleans vigorously — 2025-04-02
• Combs — 2020-11-11
• Combs — 2016-03-13
• Searches high and low — 2014-02-12
• Searches high and low — 2009-07-19
• Searches high and low — 2001-09-23
• Combs — 1997-01-12
• Turns inside out, so to speak — 1996-07-31
• Searches thoroughly — 1994-01-22