Historical clue formulations

• Like Swiss cheese — 2024-07-15
• Well-ventilated — 2020-03-07
• Moth-eaten, e.g. — 2018-04-05
• Needing darning, maybe — 2008-12-30
• Honeycombed — 2005-01-29
• Like Swiss cheese — 2001-07-17
• Like old socks, maybe — 1999-12-17