On Boston PBS there is a show on called The History Detectives, they are going to trace a Harley Davidson that was supposedly used during World War 1. The current owner claims that he thinks it was used by the military during the war. Might be interesting to see how they trace it back and might have some good vintage footage. At least in the preview they showed some military footage. The segment is probably only 15 minutes or so, they usually do 3 different things. Don't know if the show is on in any other areas.