Historical clue formulations

• Finalize, in a way — 2026-07-11
• Endorse, as a check — 2025-04-14
• Communicate with the hands — 2025-03-25
• Join a petition — 2024-09-08
• Leave one's mark, in a way — 2024-02-11
• "It's a ___" — 2023-09-21
• Symptom — 2023-04-16
• Omen — 2023-04-05
• Exit or Yield — 2023-01-31
• Road Work Ahead or Dead End — 2022-06-06
• Make binding, in a way — 2022-03-03
• Speak to a deaf person, in a way — 2021-11-22
• Ink — 2021-01-31
• + or - — 2020-11-22
• Leo or Libra — 2020-02-27
• Omen — 2019-10-30
• Leo, for example — 2019-08-25
• Endorse — 2017-10-15
• +, $ or @ — 2017-03-10
• Omen — 2016-04-06
• 11-Down, for one — 2014-12-30
• Sharp or flat — 2014-08-08
• Leo or Libra — 2013-07-08
• Crop circle, some believe — 2012-04-04
• "It's a ___" — 2011-04-15
• Accept a contract — 2011-02-02
• Plus or minus, say — 2010-12-18
• Foreshadowing — 2010-01-28
• Billboard — 2010-01-26
• Stop or Do Not Pass — 2009-04-13
• Communicate silently — 2007-07-08
• Aries or Libra — 2007-05-28
• Nod, maybe — 2007-02-21
• Affix one's John Hancock — 2007-02-20
• Ink — 2006-06-04
• Affix one's John Hancock — 2006-01-23
• Not just initial — 2005-08-18
• Speak manually — 2005-06-29
• Gemini, for one — 2005-05-11
• Communicate by hand — 2004-02-16
• Make legally effective — 2003-12-07
• Pickup line request — 2002-06-08
• Communicate silently — 2000-12-03
• Endorse — 2000-08-31
• Writing on the wall, e.g. — 2000-04-17
• Omen — 1999-08-23
• Indicator — 1999-03-07
• Ink a contract — 1998-02-23
• Leo, for one — 1997-09-10
• Billboard — 1996-10-15