the TE20, and to gain the full utility of the tractor the farmer also had to purchase specially-designed implements to work with the tractor. Ferguson initially designed and manufactured a range of implements for the TE20 in-house, but as the tractor's popularity spread other manufacturers began designing their own machinery for the TE20 in agricultural, industrial, construction and horticultural applications. The idea that the three-point linkage made the tractor and its implement into a single mechanised unit was marketed as 'The Ferguson System', presenting a wholly new and entirely mechanised form of agriculture. By 1950 there were over 60 official Ferguson implements for the TE20, many of which had not been seen in mechanised tractor-mounted form before. As well as basic implements such as ploughs, harrows and cultivators, the range included a number of trailers and loaders, seed drills, a side-mounted baler, a very rare 'wraparound' combine harvester, a muck spreader, a sickle mower and a powered auger. With its power take-off, the tractor could also drive stand-alone equipment, such as pumps, milking machinery or circular saws, by belt or driveshaft. Ferguson became well known for its effective and distinctive advertising, intended to demonstrate the abilities of the TE-20 tractor to farmers who previously had used only draft horses and had little experience with mechanised equipment. Public demonstrations of Ferguson tractors and implements were held throughout rural Britain towards the end of the harvest season. A typical demonstration involved fencing off an area and using a cultivator-equipped TE-20 to till the complete area - such an area was too small to be worked by a horse or a drawbar-equipped tractor of the time. Advertising also emphasised that in the 'Ferguson System' the tractor was not merely a replacement for the horse but, via its linkage and shaft-drive power take-off, it could mechanise dozens of agricultural tasks previously performed either by separate machines, unwieldy drawbar-mounted trailed equipment, or manual labour. The TE and TO 20 tractors were so revolutionary that Ferguson set up a training school in the grounds of Stoneleigh Abbey, close to the Banner Lane factory. There, Ferguson dealers, salesmen and engineers were trained on the new machines they would be working on, and courses were also run for farmers to learn how to most effectively operate the tractors and the various implements. Coventry production up to 1956 was 517,651 units, with about 66% being exported, mainly to Continental