Historical clue formulations

• Cover with a black rectangle, say — 2026-08-02
• Use a Sharpie on, perhaps — 2025-06-04
• Black out — 2025-05-11
• Black out, in a way — 2018-07-26
• Black out — 2015-09-26
• Edit — 2014-09-08
• Ready for publication — 2012-08-18
• Edit — 2009-05-25
• Blue-pencil — 2007-01-07
• Blue-pencil — 2006-10-01
• Edit — 2006-09-24
• Edit — 2005-09-18
• Get to work on Time — 2000-12-30
• Ready for publication — 1998-11-08
• Blue-pencil — 1998-01-30
• Edit — 1995-01-31