Historical clue formulations

• With 63-Across, "The end" ... or what can be said about the novels in the clues for 25-, 38- and 52-Across — 2021-11-16
• "There's nothing else" — 2018-07-29
• Introduction to folks? — 2018-06-02
• "Nothing left to say" — 2013-05-27
• Words of dismissal — 1999-09-19
• "Sorry, no more" — 1998-11-21