Historical clue formulations

• Winning feat achieved twice by the Green Bay Packers (1929-31, 1965-67) — 2023-07-19
• Accomplishment for the 1970s Oakland A's — 2022-09-24
• *One of two for the 1990s Chicago Bulls — 2021-06-30
• 1993 Bulls feat — 1995-07-21