Historical clue formulations

• Former times — 2026-01-11
• Personal histories — 2025-12-28
• Histories that may be checkered or sordid — 2021-10-18
• Some people have checkered ones — 2021-10-05
• Checkered things — 2020-01-18
• Skeletons in the closet, so to speak — 2019-03-21
• Histories — 2018-11-12
• They often come back to haunt people — 2017-08-25
• Histories — 2015-06-10
• They may be sordid — 2010-03-29
• They might be checkered — 2009-02-09
• They may be sordid — 2004-08-11
• They may be checkered — 2003-11-04
• Some have been checkered — 2002-06-29