Historical clue formulations

• Collections of bets — 2023-07-23
• Cannonball targets — 2021-12-25
• Spots for dips — 2021-12-10
• Combines — 2020-04-25
• Diving venues — 2018-02-19
• Lifeguard areas — 2014-02-10
• Combines — 2012-07-08
• Crawl spaces? — 2010-11-26
• Office diversions — 1999-07-10
• Chlorinated waters — 1997-05-27
• Office betting plans — 1995-11-09
• Betting systems — 1995-06-13