Historical clue formulations

• Not taught — 2025-09-09
• Like an Afro hairstyle — 2024-07-24
• Word before gas or disaster — 2016-03-07
• Quick learner — 2015-03-10
• Undyed — 2013-05-14
• Expert despite little training — 2013-03-31
• Raw — 2012-05-25
• Seven, for one — 2011-10-09
• Like sugar vis-à-vis Equal — 2008-03-30
• Untouched — 2005-06-12
• Musical mark — 2003-07-08
• 7 or 11, initially, at a 1-Across — 2002-09-26
• Chemical-free — 2002-02-04
• Seven, e.g. — 2000-01-20