Historical clue formulations

• Big safes — 2021-08-31
• Parts of a gymnastics routine — 2019-07-14
• Hurdles — 2015-03-14
• Leaps — 2014-09-14
• Jumps — 2013-11-21
• Jumps — 2007-02-18
• Safes — 2004-10-18
• Jumps with a pole — 1998-02-03