POWS
Set to 4 different clues across 4 published puzzles, most often “Part of a treaty exchange, for short” — The New York Times, Thursday, 24 May 2007.
4 letters
Every clue on record, most used first
- Part of a treaty exchange, for shortonce
The New York Times — Thursday, 24 May 2007
- "Stalag 17" extrasonce
The New York Times — Tuesday, 9 January 2001
- Geneva Convention concernonce
The New York Times — Sunday, 7 June 1998
- Some camp denizens, for shortonce
The New York Times — Monday, 11 August 1997