Historical clue formulations

• "Strega ___" (1975 children's book) — 2026-04-22
• Tri-, tripled — 2026-03-01
• "Strega ___" (classic children's folk tale) — 2025-01-19
• Singer Gaye, daughter of Marvin — 2024-06-28
• Prefix with -gon — 2024-06-26
• ___ Hendryx, "Lady Marmalade" singer — 2022-11-08
• Prefix for a polygon with 140-degree interior angles — 2019-12-22
• Prefix with -gon — 2018-03-09
• Prefix meaning 60-Across — 2017-12-20
• Singer Hendryx — 2014-02-19
• Numerical prefix — 2013-08-30
• R&B singer Hendryx — 2009-10-04
• "Ali" actress Gaye — 2009-09-12
• Hendryx of the group Labelle — 2007-04-18
• Like some hepatitis — 2005-06-25
• Soul singer Hendryx — 1997-07-16
• Pop singer Hendryx — 1995-03-12