DAU
Set to 3 different clues across 3 published puzzles, most often “Family tree abbr.” — The New York Times, Saturday, 16 April 2011.
3 letters
Every clue on record, most used first
- Family tree abbr.once
The New York Times — Saturday, 16 April 2011
- Genealogist's abbr.once
The New York Times — Sunday, 10 August 1997
- Certain child: Abbr.once
The New York Times — Sunday, 25 August 1996