Historical clue formulations

• Sloping surfaces — 2024-07-28
• Tilts — 2023-11-29
• Tilts — 2018-11-12
• Slopes — 2012-05-04
• Secret thieves of slang — 2010-04-01
• Bevels — 2004-11-20
• Jargons — 2004-04-13
• Pitches — 2003-09-26
• Isn't level — 2002-12-01
• Tilts — 2001-05-04
• Jargons — 1999-06-10
• Jargons — 1996-07-14
• Tilts — 1994-08-07