NPR

Set to 29 different clues across 40 published puzzles, most often “Big inits. in news” — The New York Times, Sunday, 7 March 2010.

3 letters

Every clue on record, most used first

Big inits. in news4 times
The New York Times — Sunday, 7 March 2010
"All Things Considered" network4 times
The New York Times — Tuesday, 17 February 2004
"Fresh Air" airer3 times
The New York Times — Friday, 17 April 2009
"Car Talk" airer2 times
The New York Times — Tuesday, 7 July 2009
"All Things Considered" airer2 times
The New York Times — Tuesday, 28 November 2006
"Morning Edition" airer2 times
The New York Times — Tuesday, 24 January 2006
Media inits. since 1970once
The New York Times — Saturday, 9 July 2011
D.C.-based news sourceonce
The New York Times — Sunday, 19 June 2011
"Wait Wait ... Don't Tell Me!" aireronce
The New York Times — Wednesday, 12 January 2011
"Science Friday" carrieronce
The New York Times — Friday, 29 January 2010
"Wait Wait ... Don't Tell Me!" networkonce
The New York Times — Wednesday, 15 July 2009
D.C.-based news org.once
The New York Times — Saturday, 30 May 2009