ISOLATIONBOOTHS
Set to 2 different clues across 2 published puzzles, most often “They were used on old TV's "Twenty One"” — The New York Times, Friday, 4 September 2009.
15 letters
Every clue on record, most used first
- They were used on old TV's "Twenty One"once
The New York Times — Friday, 4 September 2009
- Places where 17-Across satonce
The New York Times — Wednesday, 5 October 1994