OPCIT
Set to 4 different clues across 9 published puzzles, most often “Footnote abbr.” — The New York Times, Thursday, 21 October 2010.
5 letters
Every clue on record, most used first
- Footnote abbr.5 times
The New York Times — Thursday, 21 October 2010
- Ibid. relative2 times
The New York Times — Saturday, 26 January 2008
- Bibliographical abbr.once
The New York Times — Friday, 7 July 2000
- Bibliography abbr.once
The New York Times — Wednesday, 2 June 1999