ETCS
Set to 4 different clues across 4 published puzzles, most often “Series conclusions: Abbr.” — The New York Times, Thursday, 1 October 2009.
4 letters
Every clue on record, most used first
- Series conclusions: Abbr.once
The New York Times — Thursday, 1 October 2009
- Truncation indications: Abbr.once
The New York Times — Friday, 31 August 2007
- Series finales?: Abbr.once
The New York Times — Friday, 30 August 2002
- Customary extras: Abbr.once
The New York Times — Saturday, 30 April 1994