Historical clue formulations

• 1960s-'80s singer/TV host Marilyn — 2025-04-18
• Marilyn who sang "Aquarius/Let the Sunshine In" — 2024-10-06
• Marilyn of the 5th Dimension — 2016-04-09
• Marilyn of R&B — 2012-11-16
• Marilyn who hosted 1980s TV's "Solid Gold" — 2011-11-27
• 1960s-'70s R&B singer Marilyn — 2010-12-20
• Singer Marilyn — 2006-08-13
• Marilyn of the 5th Dimension — 2006-08-10