Historical clue formulations

• Film production environment for an intimate scene, perhaps — 2026-09-17
• One side of a store sign — 2018-10-19
• Shut — 2015-01-18
• Not for the general public — 2013-12-21
• After-hours shop sign — 2013-11-26
• Hush-hush powwow — 2011-05-29
• Dark, on Broadway — 1997-07-12
• Out of business — 1997-02-04