Last seen in:
- Wall Street Journal - Nov 10 2018 - Opposites Attract
- The Guardian - Quick crossword No 14,312 - Mar 23 2016
- The Times - Concise - Times2 Concise 6807 - September 2, 2015
- L.A. Times Daily - Nov 30 2014
- New York Times - May 7 2014
- L.A. Times Daily - Jun 10 2013
- L.A. Times Daily - Dec 14 2012
- The Chronicle of Higher Education - Oct 12 2012
- L.A. Times Daily - Oct 10 2011
- USA Today - Jul 8 2011