Harry's kit reminds me of the old rubber powered free flight model airplanes I built many years ago. They had all the wing ribs, bulkheads, tail surface parts, etc. printed on a sheet of balsa and you had to cut them out with a hobby knife. You got a bundle of sticks to make all the fuselage stringers, wing spars, etc. then had to assemble them carefully. Brushing on dope and applying tissue covering was a PITA, too, and they often didn't fly very well. Plastic model cars were so much easier and more satisfying to me back then.
Sam