http://www.modelairplanepages.com/a...x/aj-index.html
is a website devoted to making your own Jim Walker Interceptor Clone. Never could afford one of these when I was a pup (I believe they were 50 cents and the "74" gliders were 10 cents at that time. There was always a vendor in the parking lot at Lambert Field in St. Louis at that time.

This is the folding wing glider in my mind.

Enjoy,
Ed