clubs is the operation of a club track or miniature railway for members' model live steam locomotives. These tracks are often run publicly and form part of community recreational and tourism infrastructure in their local area. Model engineering clubs and societies often cater too for model engineering interests beyond locomotives. Due to the inherently dangerous nature of live steam, clubs and societies are responsible for administering safety regulations, insurance and specialist boiler codes that cover both members and the public. To this end, model engineering clubs and societies often affiliate into national bodies that can lobby government to maintain the historical privilege they have to self-regulate their own safety standards. Livelihoods based on model engineering include retailers who provide model engineers with equipment and supplies, small fabrication services who produce castings, make miniature live steam boilers and live steam kit parts (or even whole running models), commercial publishers in the model engineering press, and a very few professional model engineers who make one-off models by commission for private or institutional collectors. Most model engineers however are amateur constructors who rely on other income. Notable model engineers Each year, many local and regional model engineering shows and exhibitions are held wherever clubs are found, which recognize the best work of model engineers. The largest exhibitions are held in London, Harrogate and Bristol in the UK. In the UK, the Duke of Edinburgh Challenge Trophy, awarded annually at the Model Engineer Exhibition, reflects some of the best of the hobby. Pre-eminent among the Trophy's recipients is nine-time winner Cherry Hill. On the web, the quality of some modern model engineers' work is celebrated at The Internet Craftsmanship Museum. Many of the best-known names in model engineering are of those who wrote prolifically in the model engineering press. Henry Greenly may be the first notable model engineer, being founding editor of Model Railways and Locomotives Magazine in 1902 and author of Model Engineering and related books. Greenly produced a number of designs for spirit-fuelled model locomotives, which however could not haul passengers. Arguably the most notable model engineer of all was the obscure 'LBSC' (Lillian "Curly" Lawrence). His most significant contribution was to overturn Greenly's prevailing orthodoxy and demonstrate that model locomotives of even small gauge (2½") could be powerful enough to haul passengers, by using miniature coal-fired firetube boilers, as were used in full-size locomotives. From 1923 until his death in 1967