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Alfred Dodman and Co were producers of engines, boilers and castings at King's Lynn.
1854 Alfred Dodman founded Highgate Works at King's Lynn.
1872 Built first traction engines, hoist and marine engines.
1875 He moved to the Highgate Works, adjacent to Highgate Bridge and with a siding connection to the dock railway.
1876 Exhibitor at the Royal Agricultural Show at Birmingham with a vertical engine. 
1882 Produced an improved traction engine.
1895 Advertisement shows examples of their boilers, stationary engines, portable engines, launch engines, winding engines, and gears.
1896 Built two railway locomotives. Dodmans had considerable experience with road traction engines and occasionally repaired shunting engines for local companies such as the West Norfolk Farmers' Manure & Chemical Co. Ltd. Mr Burkitt's was the first, and probably the only, order they received for a new railway locomotive. For the general design and proportions, advice was sought from a Mr S. Stone of the GER's Stratford locomotive works, while the details, apart from the wheels, were worked out by Mr Dodman himself, who made use of traction engine components wherever possible. Frederick Savage, a neighbouring King's Lynn engineer, was well known as a builders of fairground engines and may have been involved. "Gazelle" was very small, and often described as a toy, model or miniature engine.
1897 The firm was re-organised as a limited company.
1903 Issued illustrated engine catalogue, B edition.
1906 Producing a range of oil engines sized from 2 to 20 bhp.
1912? Two Horizontal Engines with gear drive for Wisbech Waterworks (Marham Station).
1925 Cornish boiler for Lower Padnal.
1931 (1929?) Purchased E. S. Hindley and Sons and concentrated on oil engines.
1975 Company ceased trading?