Over on the National Association for Amateur Radio website, there is a very well written article about collecting Ham Radio on stamps. The author,Fabio Serra Flosi, does a very thorough job of explaining the topic and makes it interesting even to those who don’t know the first thing about ham radio. Flosi is apparently planning to exhibit at international shows with a topical exhibit called “Wireless Evolution: From Marconi to Cell Phones” . You can read the article at this link.