Historical clue formulations

• Highly prized rewards on "Survivor" — 2026-09-26
• Camping covers — 2026-09-01
• Covers for campers — 2026-07-01
• They're cover-ups! — 2026-06-24
• Rain delay coverings — 2026-02-11
• Covers for campers — 2022-04-10
• All-weather protectors — 2021-10-05
• They may protect diamonds — 2019-10-01
• Infield covers — 2019-09-09
• Sheets of rain? — 2019-07-25
• Coverings pulled across infields — 2017-05-22
• Rain delay covers — 2017-02-21
• Diamond protectors — 2015-08-09
• Some cover-ups — 2014-07-25
• Rain checks? — 2010-12-12
• Bad-weather gear — 2008-08-03
• Temporary covers — 2008-07-10
• Diamond protectors — 2007-11-16
• Field protectors — 2005-11-14
• Rainy day cover-ups — 2004-11-12
• Some campers' supplies — 2002-08-22
• Diamond protection — 2000-02-03
• Canvas covers — 1997-01-17
• They're saved for a rainy day — 1996-09-20
• Diamond preservers? — 1996-07-06