The Page One Models Secretary’s Challenge
This Challenge was an idea from Chris Fry. It was to construct a model from the first page of the 1970–78 list of parts, i.e. parts 1 to 50 inclusive.
That meant that strips, angle girders, axle rods, various brackets, pulleys, most of the gears, nuts and bolts, etc. could all be used, but not any plates or tyres. For the full list look at the back of one of the old manuals.