Question for the more historically-minded amongst you. Around 1975, three early dual-line kites appeared on the UK market roughly at the same time: Peter Powell Stunter, Dunford Flying Machine and Cambridge Combat.
Does anyone know exactly when these three kites came on the market? Who was actually first, second, third? I have e-mailed Peter Powell kites and Cochranes as well, in case they have something in their records (as far as I'm aware, the maker of the Cambridge Combat doesn't exist any more).