As predicted two days ago at http://goo.gl/l6JnU, David Lambert did appear on the television program History Detectives. He used genealogy research to identify the owner of a powder horn from the French and Indian Wars. If you missed the program or if your local PBS station did not broadcast it, newsletter reader Humphrey offers another alternative: you can watch the program on your computer or tablet at any time at http://video.pbs.org/video/2323355629.
When I watched the program online, the video took some time to load. Be patient. It will play eventually.