Last seen in:
- The Washington Post - Dec 17 2016
- The Washington Post - Jun 24 2016
- New York Times - Jan 10 2015
- New York Times - Oct 4 2014
- New York Times - Jun 28 2014
- Wall Street Journal - Apr 18 2014 - April 18, 2014 - Spring Loaded
- New York Times - Dec 16 2013
- New York Times - Dec 1 2013
- Wall Street Journal - May 31 2013 - May 31, 2013 - Automated
- New York Times - Mar 3 2013