Historical clue formulations

• Sweat ___ — 2026-06-30
• Saliva secreter — 2024-11-17
• Thymus, e.g. — 2021-05-13
• Prostate, e.g. — 2019-08-15
• Something that's secretive — 2019-01-12
• Thyroid, for instance — 2013-03-04
• Secretive body part — 2012-02-17
• Producer of sweat and tears, but not blood — 2010-08-31
• Sweat ___ — 2006-12-27
• Pituitary, e.g. — 2002-06-06
• Thymus, e.g. — 2001-10-25
• Hormone regulator — 1998-03-04
• Thyroid, e.g. — 1996-05-20
• Endocrine, e.g. — 1994-08-24
• Liver or thyroid — 1994-05-16