Historical clue formulations

• Loses it — 2022-11-19
• Flips out — 2019-10-18
• Loses one's sanity — 2015-05-04
• Loses one's grip? — 2014-10-07
• Finally cracks — 2012-09-06
• Cracks up — 2012-03-22
• Loses it — 2007-04-04