Historical clue formulations

• Part of an accusation in Clue — 2017-10-01
• One-third of a Clue accusation — 2014-12-15
• The "what" of a Clue accusation, whose identity is hinted at by the three circled answers in this quadrant — 2014-01-05
• Firearm, e.g. — 2005-04-11
• Knife or club — 2004-05-12
• Category in the game Clue — 2002-08-09
• Club, say — 1997-08-14