IRS
Set to 104 different clues across 123 published puzzles, most often “Form letters?” — The New York Times, Thursday, 11 August 2011.
3 letters
Every clue on record, most used first
- Form letters?4 times
The New York Times — Thursday, 11 August 2011
- Collection agcy.3 times
The New York Times — Thursday, 16 June 2011
- Org. with a code3 times
The New York Times — Tuesday, 30 June 2009
- April 15 org.3 times
The New York Times — Monday, 24 December 2007
- Form 1040 org.3 times
The New York Times — Monday, 28 May 2007
- Kind of agent3 times
The New York Times — Wednesday, 29 August 2001
- Apr. addressee3 times
The New York Times — Sunday, 10 December 2000
- 1040 org.2 times
The New York Times — Monday, 1 September 2008
- Return addressee?2 times
The New York Times — Friday, 6 June 2008
- Tax org.2 times
The New York Times — Monday, 21 April 2008
- April initials2 times
The New York Times — Monday, 8 January 2001
- Org. whose Web site has a "Where's My Refund?" sectiononce
The New York Times — Tuesday, 19 July 2011