Historical clue formulations

• Mathematics writer Gardner — 2026-04-18
• First name in civil rights history — 2024-11-19
• Actor/comedian Steve — 2023-01-02
• Short, for one — 2018-07-19
• With 65-Across, author of the "Ninety-Five Theses," posted on 10/31/1517 — 2017-10-31
• Variety of swallow — 2007-03-16
• 1990's Fox sitcom — 1998-07-21
• Former Fox sitcom — 1997-12-13
• See 19-Across — 1996-02-29