Historical clue formulations

• "Santa Baby" singer Eartha — 2025-11-10
• Singer Eartha — 2024-05-09
• Eartha who sang "I Want to Be Evil" — 2024-01-03
• Eartha who played Catwoman — 2021-10-13
• Singer Eartha — 2020-09-08
• Singer Eartha — 2019-10-01
• Eartha who sang "C'est Si Bon" — 2019-01-07
• "Santa Baby" singer — 2016-05-15
• Eartha who sang "C'est Si Bon" — 2016-02-24
• Chanteuse Eartha — 2014-07-20
• "Santa Baby" singer — 2014-04-27
• Smoky-voiced Eartha — 2014-04-22
• Talking car on "Knight Rider" — 2012-10-27
• "Santa Baby" singer — 2011-12-25
• Arizona's ___ Peak National Observatory — 2008-08-15
• "Santa Baby" singer, 1953 — 2008-08-06
• Arizona's ___ Peak National Observatory — 2007-05-26
• "Santa Baby" singer — 2002-03-24
• "Santa Baby" hitmaker, 1953 — 2000-09-28
• Eartha of song — 1996-03-05
• Catwoman of 60's TV — 1995-05-05
• Songstress Eartha — 1994-05-10