ISBN
Set to 15 different clues across 17 published puzzles, most often “Novel ID” — The New York Times, Friday, 11 March 2011.
4 letters
Every clue on record, most used first
- Novel ID2 times
The New York Times — Friday, 11 March 2011
- Library ID2 times
The New York Times — Monday, 8 May 2006
- ID in a library vol.once
The New York Times — Tuesday, 9 August 2011
- Publisher's 13-digit IDonce
The New York Times — Wednesday, 23 June 2010
- Amazon.com IDonce
The New York Times — Wednesday, 2 June 2010
- 978-0060935443, for Roget's Thesaurusonce
The New York Times — Monday, 4 May 2009
- ID on a dust jacketonce
The New York Times — Tuesday, 23 October 2007
- 0-198-61186-2, e.g.once
The New York Times — Saturday, 20 May 2006
- Novel figure: Abbr.once
The New York Times — Friday, 7 April 2006
- Card catalog abbr.once
The New York Times — Tuesday, 20 December 2005
- Bibliophile's citation, for shortonce
The New York Times — Thursday, 20 October 2005
- Library cataloging datum, brieflyonce
The New York Times — Sunday, 25 September 2005