Historical clue formulations

• See 22-Across — 2026-06-07
• Lock in, so to speak — 2026-03-19
• Guarantee — 2025-01-26
• Guarantee — 2023-03-14
• Guarantee — 2022-05-30
• Not leave to chance — 2021-10-14
• Make certain — 2021-03-09
• Nutritional drink brand — 2021-02-09
• Guarantee — 2017-11-08
• Guarantee — 2017-07-23
• Guarantee — 2015-07-12
• Nutritional supplement brand — 2014-10-20
• Double-check, e.g. — 2012-02-23
• Make certain — 2011-09-13
• Make certain — 2011-07-18
• Protect — 2007-08-30
• Guard — 2007-05-12
• Nutrition drink brand — 2007-04-22
• Cinch — 2006-12-09
• Make certain — 2006-05-08
• Check again — 2005-11-24
• Guarantee — 2005-07-10
• Protect — 2003-09-25
• Co-sign, as a loan — 2003-05-29
• Guarantee — 2002-05-22
• Make certain — 2000-04-26
• Make certain — 2000-02-22
• Guarantee — 1999-02-14
• Cinch — 1998-05-24
• Guarantee — 1998-04-12
• Nail down — 1996-11-24
• Guarantee — 1995-10-13
• Lock up — 1994-03-17
• Nail down — 1993-12-17