Historical clue formulations

• Tightly enclose — 2023-06-04
• Protect, as freshness — 2022-12-21
• Protect, as freshness — 2019-11-17
• Give no escape — 2014-12-06
• Immure — 2006-07-01
• Enclose — 2006-06-03
• Protect, as freshness — 2005-02-28
• Securely fasten — 2000-11-15
• Protect, as freshness — 1998-03-31
• Immure — 1997-08-16