Historical clue formulations

• Gap — 2025-04-14
• Unfilled space — 2024-09-18
• Missing portion of a manuscript — 2021-02-19
• Gap in a manuscript — 2015-09-27
• Blank portion of a manuscript — 2015-07-14
• Blank space — 2010-02-21
• Gap in a manuscript — 2009-12-14
• Gap in a manuscript — 2002-05-26
• Gap — 2002-02-01
• Gap — 1995-08-25