Historical clue formulations

• Makes like a melting icicle — 2024-12-22
• Traces left by burning candles — 2019-06-16
• Some causes of insomnia — 2015-10-29
• Jobs for plumbers — 2010-03-05
• Namby-pambies — 2010-02-27
• Needs a washer, possibly — 2008-05-03
• Paints like Pollock — 2003-10-15
• Bores, informally — 2001-10-30
• Boring fellows — 1998-11-10
• Tap problems — 1998-01-08
• Nerds — 1997-09-24
• Colorless people — 1996-03-10
• Faucet problems — 1994-12-06
• Insomnia causes — 1994-02-16