Historical clue formulations

• Title for Jackie or Jill, and a hint to the answers to the starred clues — 2024-06-11
• -> Di <- Gaga Godiva — 2021-11-18
• Bess Truman or Barbara Bush — 2008-04-07
• Mrs. in the White House — 1999-12-20
• Barbara or Betty, once — 1995-02-25