Last seen in:
- Eugene Sheffer - King Feature Syndicate - Sep 10 2021
- Wall Street Journal - Nov 7 2018 - Solve This, Please!
- Universal - Mar 2 2017
- New York Times - Sep 7 2016
- L.A. Times Daily - Mar 23 2014
- The Chronicle of Higher Education - Apr 19 2013
- Thinks.com - Mar 22 2010
- Thomas Joseph - King Feature Syndicate - Dec 8 2009
- Thinks.com - Jul 17 2009
- Thinks.com - Mar 22 2008