Historical clue formulations

• Attempt, informally — 2026-06-20
• With 63-Down, period following the Jazz Age — 2023-10-05
• Afford, casually — 2022-03-06
• Folgers concern — 2016-09-15
• See 57-Across — 2005-11-09
• Big Band music — 2000-08-13
• Playground equipment — 1997-05-19