Historical clue formulations

• Tucked (away) — 2023-02-06
• Like a squirrel's acorns — 2015-11-23
• Hid — 2014-08-30
• Hidden — 2013-02-10
• Squirreled away — 2009-07-08
• Like loot, often — 2009-05-14
• In a cache — 2009-03-01
• Hid — 2003-05-13
• Salted away — 1998-09-13
• Socked away — 1998-03-19