Historical clue formulations

• One who makes a lasting impression while just scratching the surface — 2026-08-04
• Impressionist artist? — 2017-06-08
• Dürer, for one — 2009-02-15
• Artist working on glass — 2008-10-20
• Goya, for one — 2006-12-09
• Acid user — 1999-07-17
• Goya, for one — 1999-05-19
• Albrecht Dürer, e.g. — 1995-08-08
• Waterford worker — 1994-10-21
• Whistler was one — 1993-12-02