Larry, I don't know the answer but I am amazed that there seems to be such an endless supply of JW products and variants. As a kid I could give you the rundown on Berkley, Sterling, TopFlite, Carl Goldberg and Scientific but as far as Walker's products, I knew the Fireball, Firebaby, Hornet, The interceptor glider and the Ceiling Walker. Over the last few years I see more an more that apparently were not advertised in the magazines because I scoured them repeatedly.