Historical clue formulations

• Bother — 2023-08-30
• Gadfly — 2020-10-17
• Bother — 2018-07-26
• Detour, e.g. — 2014-02-09
• Pain in the neck — 2006-01-16
• Harrier — 2003-03-08
• Headache — 2002-03-23
• Dennis, to Mr. Wilson — 2001-07-24