Historical clue formulations

• Fifth wheel — 2025-08-25
• Fifth wheel — 2018-08-17
• Little extra poundage — 2017-07-06
• Gut — 2014-07-17
• Likely result of excess 17- and 53-Across — 2013-08-24
• Trunk item ... or what has been put on 18-, 24-, 41- and 53-Across? — 2012-01-18
• Jack accompanier — 2004-11-06
• Trunk item — 1999-04-19
• Middle weight? — 1999-02-26
• Blubber, so to speak — 1995-08-12