Historical clue formulations

• Singer Marian, the first African American to perform at the Met — 2023-04-30
• See 46-Across — 2019-09-22
• See 41-Across — 2016-10-19
• "Father Knows Best" family name — 2014-05-09
• News anchor Cooper — 2010-09-19
• Independent Presidential candidate of 1980 — 1999-07-14
• "Father Knows Best" family name — 1997-05-13