In an attempt to find a Trophy Super Circus band set and the Jet Siren horn, designed by Joe Thompson, I submitted a brief general history to a toy collector web site. Grossman Music pages are at the bottom of the link to enlarge. Here is the link:

http://www.oldwoodtoys.com/trophy_products.htm

The Trophy chapter will be expanded from this text. The Jet siren horn and full size plastic trumpet Joe designed are both hex tubes like the later Swivo arms/legs. Same inventor behind em all. We needed more online about Joe Thompson...didn't we?

Peace, Gary