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About: Henry Roe Campbell     Goto   Sponge   NotDistinct   Permalink

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Henry Roe Campbell (September 9, 1807 – February 6, 1879) was an American surveyor and civil engineer. Campbell contributed to American railroading and bridge-building in the first half of the 19th century. Campbell patented his 4-4-0 design in February 1836, just a few months before the patent law was changed to require that claims include proof of originality or novelty. At the end of Campbell's career. a Harper's Magazine article in March 1879 noted that the impact Campbell's design played in railroad development in the United States when it wrote: