Historical clue formulations

• Coveted Scrabble space … or the sheet music for 16-, 21-, 34- or 51-Across? — 2024-08-26
• Red square — 2017-03-04
• Great red spot? — 2012-03-30
• Red square — 2007-04-13
• Red square — 2006-08-17
• Scrabble space — 2001-10-08
• Certain corner square — 1999-01-24