Last seen in:
- Wall Street Journal - Feb 6 2021 - Post Office Boxes
- The Washington Post - Dec 17 2020
- L.A. Times Daily - Dec 17 2020
- The Washington Post - Aug 9 2019
- L.A. Times Daily - Aug 9 2019
- The Washington Post - Nov 20 2015
- New York Times - May 25 2014
- New York Times - Jan 5 2014
- Thinks.com - Dec 11 2010
- Thinks.com - Aug 5 2010