Historical clue formulations

• Carpenter's spacer — 2026-08-16
• A matchbook, for a wobbly table, say — 2025-07-24
• Thin wedge — 2024-11-19
• Carpenter's wedge — 2024-05-02
• Prop for a tilting bookcase, say — 2022-01-18
• Carpenter's wedge — 2021-09-12
• Level — 2018-11-02
• Leveling wedge — 2018-08-27
• Carpenter's leveler — 2018-06-27
• Level — 2017-08-04
• Leveling wedge — 2017-06-21
• Level — 2016-04-16
• Leveler — 2014-11-06
• Carpentry spacer — 2014-09-01
• Thin wedge — 2011-05-05
• Thin wedge — 2010-02-21
• It keeps things on the level — 2008-09-23
• One just filling up space — 2007-09-21
• Level — 2006-07-29
• Carpenter's leveler — 2006-04-11
• Slender wedge — 2006-02-14
• Table leveler — 2005-05-11
• Level — 2004-02-01
• Machine wedge — 2003-02-15
• Mason's wedge — 2002-10-20
• Leveling wedge — 2002-10-11
• Thin wedge of wood — 2002-03-11
• Mason's wedge — 2000-08-08
• Leveling wedge — 2000-04-18
• Wooden wedge — 1994-05-22