Historical clue formulations

• *Vital piece — 2021-06-02
• Drugstore location, often — 2017-05-23
• Castle's place, initially — 2013-09-07
• Tree — 2008-02-02
• Where ends meet — 2007-05-08
• Dog-eared piece — 2005-12-11
• Tree — 2004-01-04
• Convenience outlet, often — 2000-05-14
• Safe place in the ring — 1997-11-24