Historical clue formulations

• At an angle — 2022-04-11
• Had a list — 2016-10-08
• Pitching — 2007-11-02
• Listing — 2007-01-14
• Not on the up and up? — 2002-04-23
• Out of plumb — 1999-01-14
• Oblique — 1996-11-01