Historical clue formulations

• In need of an evening out? — 2025-09-26
• Folded, as paper — 2022-08-15
• Like envelope flaps — 2019-01-02
• Like ironed pants, often — 2011-06-07
• Iron-deficient? — 2011-01-07
• Like a fedora crown — 2001-09-15
• Wrinkled — 2001-09-09
• Folded — 2000-11-18
• Wrinkled — 1995-10-07