forgot to add: there was never an official junior WC, but there was a "Five Continents Cup". I might be being unncessarily pedantic but there ya go
ReWind: There is a book about Birel which will tell you a lot more information but obviously it focuses on the Birel company. Can't remember what it's called but its on Amazon and
www.kartingmagazine.com. I don't think there's any general books, perhaps I should write one